bibliography meaning research

How to Write a Bibliography for a Research Paper

Do not try to “wow” your instructor with a long bibliography when your instructor requests only a works cited page. It is tempting, after doing a lot of work to research a paper, to try to include summaries on each source as you write your paper so that your instructor appreciates how much work you did. That is a trap you want to avoid. MLA style, the one that is most commonly followed in high schools and university writing courses, dictates that you include only the works you actually cited in your paper—not all those that you used.

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• If your assignment calls for a bibliography, list all the sources you consulted in your research.
• If your assignment calls for a works cited or references page, include only the sources you quote, summarize, paraphrase, or mention in your paper.
• If your works cited page includes a source that you did not cite in your paper, delete it.
• All in-text citations that you used at the end of quotations, summaries, and paraphrases to credit others for their ideas,words, and work must be accompanied by a cited reference in the bibliography or works cited. These references must include specific information about the source so that your readers can identify precisely where the information came from.The citation entries on a works cited page typically include the author’s name, the name of the article, the name of the publication, the name of the publisher (for books), where it was published (for books), and when it was published.

The good news is that you do not have to memorize all the many ways the works cited entries should be written. Numerous helpful style guides are available to show you the information that should be included, in what order it should appear, and how to format it. The format often differs according to the style guide you are using. The Modern Language Association (MLA) follows a particular style that is a bit different from APA (American Psychological Association) style, and both are somewhat different from the Chicago Manual of Style (CMS). Always ask your teacher which style you should use.

A bibliography usually appears at the end of a paper on its own separate page. All bibliography entries—books, periodicals, Web sites, and nontext sources such radio broadcasts—are listed together in alphabetical order. Books and articles are alphabetized by the author’s last name.

Most teachers suggest that you follow a standard style for listing different types of sources. If your teacher asks you to use a different form, however, follow his or her instructions. Take pride in your bibliography. It represents some of the most important work you’ve done for your research paper—and using proper form shows that you are a serious and careful researcher.

Bibliography Entry for a Book

A bibliography entry for a book begins with the author’s name, which is written in this order: last name, comma, first name, period. After the author’s name comes the title of the book. If you are handwriting your bibliography, underline each title. If you are working on a computer, put the book title in italicized type. Be sure to capitalize the words in the title correctly, exactly as they are written in the book itself. Following the title is the city where the book was published, followed by a colon, the name of the publisher, a comma, the date published, and a period. Here is an example:

Format : Author’s last name, first name. Book Title. Place of publication: publisher, date of publication.

• A book with one author : Hartz, Paula.  Abortion: A Doctor’s Perspective, a Woman’s Dilemma . New York: Donald I. Fine, Inc., 1992.
• A book with two or more authors : Landis, Jean M. and Rita J. Simon.  Intelligence: Nature or Nurture?  New York: HarperCollins, 1998.

Bibliography Entry for a Periodical

A bibliography entry for a periodical differs slightly in form from a bibliography entry for a book. For a magazine article, start with the author’s last name first, followed by a comma, then the first name and a period. Next, write the title of the article in quotation marks, and include a period (or other closing punctuation) inside the closing quotation mark. The title of the magazine is next, underlined or in italic type, depending on whether you are handwriting or using a computer, followed by a period. The date and year, followed by a colon and the pages on which the article appeared, come last. Here is an example:

Format:  Author’s last name, first name. “Title of the Article.” Magazine. Month and year of publication: page numbers.

• Article in a monthly magazine : Crowley, J.E.,T.E. Levitan and R.P. Quinn.“Seven Deadly Half-Truths About Women.”  Psychology Today  March 1978: 94–106.
• Article in a weekly magazine : Schwartz, Felice N.“Management,Women, and the New Facts of Life.”  Newsweek  20 July 2006: 21–22.
• Signed newspaper article : Ferraro, Susan. “In-law and Order: Finding Relative Calm.”  The Daily News  30 June 1998: 73.
• Unsigned newspaper article : “Beanie Babies May Be a Rotten Nest Egg.”  Chicago Tribune  21 June 2004: 12.

Bibliography Entry for a Web Site

For sources such as Web sites include the information a reader needs to find the source or to know where and when you found it. Always begin with the last name of the author, broadcaster, person you interviewed, and so on. Here is an example of a bibliography for a Web site:

Format : Author.“Document Title.” Publication or Web site title. Date of publication. Date of access.

Example : Dodman, Dr. Nicholas. “Dog-Human Communication.”  Pet Place . 10 November 2006.  23 January 2014 < http://www.petplace.com/dogs/dog-human-communication-2/page1.aspx >

After completing the bibliography you can breathe a huge sigh of relief and pat yourself on the back. You probably plan to turn in your work in printed or handwritten form, but you also may be making an oral presentation. However you plan to present your paper, do your best to show it in its best light. You’ve put a great deal of work and thought into this assignment, so you want your paper to look and sound its best. You’ve completed your research paper!

Back to  How To Write A Research Paper .

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Citation Guide

• What is a Citation?
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What is a Bibliography?

What is an annotated bibliography, introduction to the annotated bibliography.

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• the authors' names
• the titles of the works
• the names and locations of the companies that published your copies of the sources
• the dates your copies were published
• the page numbers of your sources (if they are part of multi-source volumes)

Ok, so what's an Annotated Bibliography?

An annotated bibliography is the same as a bibliography with one important difference: in an annotated bibliography, the bibliographic information is followed by a brief description of the content, quality, and usefulness of the source. For more, see the section at the bottom of this page.

What are Footnotes?

Footnotes are notes placed at the bottom of a page. They cite references or comment on a designated part of the text above it. For example, say you want to add an interesting comment to a sentence you have written, but the comment is not directly related to the argument of your paragraph. In this case, you could add the symbol for a footnote. Then, at the bottom of the page you could reprint the symbol and insert your comment. Here is an example:

This is an illustration of a footnote. 1 The number “1” at the end of the previous sentence corresponds with the note below. See how it fits in the body of the text? 1 At the bottom of the page you can insert your comments about the sentence preceding the footnote.

When your reader comes across the footnote in the main text of your paper, he or she could look down at your comments right away, or else continue reading the paragraph and read your comments at the end. Because this makes it convenient for your reader, most citation styles require that you use either footnotes or endnotes in your paper. Some, however, allow you to make parenthetical references (author, date) in the body of your work.

Footnotes are not just for interesting comments, however. Sometimes they simply refer to relevant sources -- they let your reader know where certain material came from, or where they can look for other sources on the subject. To decide whether you should cite your sources in footnotes or in the body of your paper, you should ask your instructor or see our section on citation styles.

Where does the little footnote mark go?

Whenever possible, put the footnote at the end of a sentence, immediately following the period or whatever punctuation mark completes that sentence. Skip two spaces after the footnote before you begin the next sentence. If you must include the footnote in the middle of a sentence for the sake of clarity, or because the sentence has more than one footnote (try to avoid this!), try to put it at the end of the most relevant phrase, after a comma or other punctuation mark. Otherwise, put it right at the end of the most relevant word. If the footnote is not at the end of a sentence, skip only one space after it.

What's the difference between Footnotes and Endnotes?

The only real difference is placement -- footnotes appear at the bottom of the relevant page, while endnotes all appear at the end of your document. If you want your reader to read your notes right away, footnotes are more likely to get your reader's attention. Endnotes, on the other hand, are less intrusive and will not interrupt the flow of your paper.

If I cite sources in the Footnotes (or Endnotes), how's that different from a Bibliography?

Sometimes you may be asked to include these -- especially if you have used a parenthetical style of citation. A "works cited" page is a list of all the works from which you have borrowed material. Your reader may find this more convenient than footnotes or endnotes because he or she will not have to wade through all of the comments and other information in order to see the sources from which you drew your material. A "works consulted" page is a complement to a "works cited" page, listing all of the works you used, whether they were useful or not.

Isn't a "works consulted" page the same as a "bibliography," then?

Well, yes. The title is different because "works consulted" pages are meant to complement "works cited" pages, and bibliographies may list other relevant sources in addition to those mentioned in footnotes or endnotes. Choosing to title your bibliography "Works Consulted" or "Selected Bibliography" may help specify the relevance of the sources listed.

This information has been freely provided by plagiarism.org and can be reproduced without the need to obtain any further permission as long as the URL of the original article/information is cited. 

How Do I Cite Sources? (n.d.) Retrieved October 19, 2009, from http://www.plagiarism.org/plag_article_how_do_i_cite_sources.html

The Importance of an Annotated Bibliography

An Annotated Bibliography is a collection of annotated citations. These annotations contain your executive notes on a source. Use the annotated bibliography to help remind you of later of the important parts of an article or book. Putting the effort into making good notes will pay dividends when it comes to writing a paper!

Good Summary

Being an executive summary, the annotated citation should be fairly brief, usually no more than one page, double spaced.

• Focus on summarizing the source in your own words.
• Avoid direct quotations from the source, at least those longer than a few words. However, if you do quote, remember to use quotation marks. You don't want to forget later on what is your own summary and what is a direct quotation!
• If an author uses a particular term or phrase that is important to the article, use that phrase within quotation marks. Remember that whenever you quote, you must explain the meaning and context of the quoted word or text. 

Common Elements of an Annotated Citation

• Summary of an Article or Book's thesis or most important points (Usually two to four sentences)
• Summary of a source's methodological approach. That is, what is the source? How does it go about proving its point(s)? Is it mostly opinion based? If it is a scholarly source, describe the research method (study, etc.) that the author used. (Usually two to five sentences)
• Your own notes and observations on the source beyond the summary. Include your initial analysis here. For example, how will you use this source? Perhaps you would write something like, "I will use this source to support my point about . . . "
• Formatting Annotated Bibliographies This guide from Purdue OWL provides examples of an annotated citation in MLA and APA formats.

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What Is a Bibliography?

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A bibliography is a list of books, scholarly  articles , speeches, private records, diaries, interviews, laws, letters, websites, and other sources you use when researching a topic and writing a paper. The bibliography appears at the end.

The main purpose of a bibliography entry is to give credit to authors whose work you've consulted in your research. It also makes it easy for a reader to find out more about your topic by delving into the research that you used to write your paper. In the academic world, papers aren't written in a vacuum; academic journals are the way new research on a topic circulates and previous work is built upon.

Bibliography entries must be written in a very specific format, but that format will depend on the particular style of writing you follow. Your teacher or publisher will tell you which style to use, and for most academic papers it will be either MLA , American Psychological Association (APA), Chicago (author-date citations or footnotes/endnotes format), or Turabian style .

The bibliography is sometimes also called the references, works cited, or works consulted page.

Components of a Bibliography Entry

Bibliography entries will compile:

• Authors and/or editors (and translator, if applicable)
• Title of your source (as well as edition, volume, and the book title if your source is a chapter or article in a multi-author book with an editor)
• Publication information (the city, state, name of the publisher, date published, page numbers consulted, and URL or DOI, if applicable)
• Access date, in the case of online sources (check with the style guide at the beginning of your research as to whether you need to track this information)

Order and Formatting

Your entries should be listed in alphabetical order by the last name of the first author. If you are using two publications that are written by the same author, the order and format will depend on the style guide.

In MLA, Chicago, and Turabian style, you should list the duplicate-author entries in alphabetical order according to the title of the work. The author's name is written as normal for his or her first entry, but for the second entry, you will replace the author's name with three long dashes. 

In APA style, you list the duplicate-author entries in chronological order of publication, placing the earliest first. The name of the author is used for all entries.

For works with more than one author, styles vary as to whether you invert the name of any authors after the first. Whether you use title casing or sentence-style casing on titles of sources, and whether you separate elements with commas or periods also varies among different style guides. Consult the guide's manual for more detailed information.

Bibliography entries are usually formatted using a hanging indent. This means that the first line of each citation is not indented, but subsequent lines of each citation are indented. Check with your instructor or publication to see if this format is required, and look up information in your word processor's help program if you do not know how to create a hanging indent with it.

Chicago's Bibliography vs. Reference System

Chicago has two different ways of citing works consulted: using a bibliography or a references page. Use of a bibliography or a references page depends on whether you're using author-date parenthetical citations in the paper or footnotes/endnotes. If you're using parenthetical citations, then you'll follow the references page formatting. If you're using footnotes or endnotes, you'll use a bibliography. The difference in the formatting of entries between the two systems is the location of the date of the cited publication. In a bibliography, it goes at the end of an entry. In a references list in the author-date style, it goes right after the author's name, similar to APA style.

• What Is a Citation?
• What Is a Senior Thesis?
• Bibliography: Definition and Examples
• Formatting Papers in Chicago Style
• Turabian Style Guide With Examples
• MLA Bibliography or Works Cited
• How to Write a Bibliography For a Science Fair Project
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• MLA Sample Pages
• How to Use Block Quotations in Writing
• Writing a History Book Review
• What Is a Style Guide and Which One Do You Need?
• Definition of Appendix in a Book or Written Work
• MLA Style Parenthetical Citations
• Bibliography, Reference List or Works Cited?
• Tips for Typing an Academic Paper on a Computer

Research Process: Bibliographic Information

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Bibliographic Information

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What is a bibliography?

A bibliography is a list of works on a subject or by an author that were used or consulted to write a research paper, book or article. It can also be referred to as a list of works cited. It is usually found at the end of a book, article or research paper. 

Gathering Information

Regardless of what citation style is being used, there are key pieces of information that need to be collected in order to create the citation.

For books and/or journals:

• Author name
• Title of publication 
• Article title (if using a journal)
• Date of publication
• Place of publication
• Volume number of a journal, magazine or encyclopedia
• Page number(s)

For websites:

• Author and/or editor name
• Title of the website
• Company or organization that owns or posts to the website
• URL (website address)
• Date of access 

This section provides two examples of the most common cited sources: a print book and an online journal retrieved from a research database. 

Book - Print

For print books, bibliographic information can be found on the  TITLE PAGE . This page has the complete title of the book, author(s) and publication information.

The publisher information will vary according to the publisher - sometimes this page will include the name of the publisher, the place of publication and the date.

For this example :  Book title: HTML, XHTML, and CSS Bible Author: Steven M. Schafer Publisher: Wiley Publications, Inc.

If you cannot find the place or date of publication on the title page, refer to the  COPYRIGHT PAGE  for this information. The copyright page is the page behind the title page, usually written in a small font, it carries the copyright notice, edition information, publication information, printing history, cataloging data, and the ISBN number.

For this example : Place of publication: Indianapolis, IN Date of publication: 2010

Article - Academic OneFile Database

In the article view:

Bibliographic information can be found under the article title, at the top of the page. The information provided in this area is  NOT  formatted according to any style.

Citations can also be found at the bottom of the page; in an area titled  SOURCE CITATION . The database does not specify which style is used in creating this citation, so be sure to double check it against the style rules for accuracy.

Article - ProQuest Database

Bibliographic information can be found under the article title, at the top of the page. The information provided in this area is  NOT  formatted according to any style. 

Bibliographic information can also be found at the bottom of the page; in an area titled  INDEXING . (Not all the information provided in this area is necessary for creating citations, refer to the rules of the style being used for what information is needed.)

Other databases have similar formats - look for bibliographic information under the article titles and below the article body, towards the bottom of the page. 

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Introduction to Reference, Bibliography, and Citation

• First Online: 19 December 2019

Cite this chapter

• Abha Agrawal 3 &
• Majid Rasouli 4  

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Research and writing are integral parts of the professional work for researchers, academics, and biomedical professionals. Scientific manuscripts commonly include references to related information in literature. The inclusion of references in manuscripts substantiates arguments with evidence, as well as acknowledges the source of information being referred to. References may be cited from such a variety of sources as journals, books, conference proceedings, magazines, and newspapers, and the Internet. This chapter discusses the basic concepts related to the process of referencing as a foundation to the effective use of reference management software programs, such as EndNote.

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Agrawal, A., Rasouli, M. (2019). Introduction to Reference, Bibliography, and Citation. In: EndNote 1-2-3 Easy!. Springer, Cham. https://doi.org/10.1007/978-3-030-24889-5_1

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Bibliography and Historical Research

Introduction.

• National Bibliography
• Personal Bibliography
• Corporate Bibliography
• Subject Bibliography
• Searching the Catalog for Bibliographies
• Browsing the Catalog for Bibliographies
• Other Tools for Finding Bibliographies
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Ask a Librarian

This guide created by Geoffrey Ross, May 4, 2017.

A bibliography is a list of documents, usually published documents like books and articles. This type of bibliography is more accurately called "enumerative bibliography". An enumerative bibliography will attempt to be as comprehensive as possible, within whatever parameters established by the bibliographer.

Bibliographies will list both secondary and primary sources. They are perhaps most valuable to historians for identifying primary sources. (They are still useful for finding secondary sources, but increasingly historians rely on electronic resources, like article databases, to locate secondary sources.)

Think of a bibliography as a guide to the source base for a specific field of inquiry. A high quality bibliography will help you understand what kinds of sources are available, but also what kinds of sources are not available (either because they were never preserved, or because they were never created in the first place).

Take for example the following bibliography:

• British Autobiographies: An Annotated Bibliography of British Autobiographies Published or Written before 1951 by William Matthews Call Number: 016.920041 M43BR Publication Date: 1955

Like many bibliographies, this one includes an introduction or prefatory essay that gives a bibliographic overview of the topic. If you were hoping to use autobiographies for a paper on medieval history, the following information from the preface would save you from wasting your time in a fruitless search:

The essay explains that autobiography does not become an important historical source until the early modern period:

Finally, the essay informs us that these early modern autobiographies are predominantly religious in nature--a useful piece of information if we were hoping to use them as evidence of, for example, the early modern textile trade:

All bibliographies are organized differently, but the best include indexes that help you pinpoint the most relevant entries.

A smart researcher will also use the index to obtain an overview of the entire source base: the index as a whole presents a broad outline of the available sources--the extent of available sources, as well as the the strengths and weaknesses of the source base. Browsing the subject index, if there is one, is often an excellent method of choosing a research topic because it enables you quickly to rule out topics that cannot be researched due to lack of primary sources.

The index to British Autobiographies , for example, tells me that I can find many autobiographies that document British social clubs (like White's and Boodle's), especially from the 19th century:

Unlike indexes you might be familiar with from non-fiction books, the indexes in bibliographies usually reference specific entries, not page numbers.

A bibliography's index will often help guide you systematically through the available sources, as in this entry which prompts you to look under related index entries for even more sources:

There are four main types of enumerative bibliography used for historical research:

Click here to learn more about bibliography as a discipline .

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A publication of the harvard college writing program.

Harvard Guide to Using Sources 

• The Honor Code
• Bibliography

If you are using Chicago style footnotes or endnotes, you should include a bibliography at the end of your paper that provides complete citation information for all of the sources you cite in your paper. Bibliography entries are formatted differently from notes. For bibliography entries, you list the sources alphabetically by last name, so you will list the last name of the author or creator first in each entry. You should single-space within a bibliography entry and double-space between them. When an entry goes longer than one line, use a hanging indent of .5 inches for subsequent lines. Here’s a link to a sample bibliography that shows layout and spacing . You can find a sample of note format here .

Complete note vs. shortened note

Here’s an example of a complete note and a shortened version of a note for a book:

1. Karen Ho, Liquidated: An Ethnography of Wall Street (Durham: Duke University Press, 2009), 27-35.

1. Karen Ho, Liquidated , 27-35.

Note vs. Bibliography entry

The bibliography entry that corresponds with each note is very similar to the longer version of the note, except that the author’s last and first name are reversed in the bibliography entry. To see differences between note and bibliography entries for different types of sources, check this section of the Chicago Manual of Style .

For Liquidated , the bibliography entry would look like this:

Ho, Karen, Liquidated: An Ethnography of Wall Street . Durham: Duke University Press, 2009.

Citing a source with two or three authors

If you are citing a source with two or three authors, list their names in your note in the order they appear in the original source. In the bibliography, invert only the name of the first author and use “and” before the last named author.

1. Melissa Borja and Jacob Gibson, “Internationalism with Evangelical Characteristics: The Case of Evangelical Responses to Southeast Asian Refugees,” The Review of Faith & International Affairs 17, no. 3 (2019): 80-81, https://doi.org/10.1080/15570274.2019.1643983 .

Shortened note:

1. Borja and Gibson, “Internationalism with Evangelical Characteristics,” 80-81.

Bibliography:

Borja, Melissa, and Jacob Gibson. “Internationalism with Evangelical Characteristics: The Case of Evangelical Responses to Southeast Asian Refugees.” The Review of Faith & International Affairs 17. no. 3 (2019): 80–93. https://doi.org/10.1080/15570274.2019.1643983 .

Citing a source with more than three authors

If you are citing a source with more than three authors, include all of them in the bibliography, but only include the first one in the note, followed by et al. ( et al. is the shortened form of the Latin et alia , which means “and others”).

1. Justine M. Nagurney, et al., “Risk Factors for Disability After Emergency Department Discharge in Older Adults,” Academic Emergency Medicine 27, no. 12 (2020): 1271.

Short version of note:

1. Justine M. Nagurney, et al., “Risk Factors for Disability,” 1271.

Nagurney, Justine M., Ling Han, Linda Leo‐Summers, Heather G. Allore, Thomas M. Gill, and Ula Hwang. “Risk Factors for Disability After Emergency Department Discharge in Older Adults.” Academic Emergency Medicine 27, no. 12 (2020): 1270–78. https://doi.org/10.1111/acem.14088 .

Citing a book consulted online

If you are citing a book you consulted online, you should include a URL, DOI, or the name of the database where you found the book.

1. Karen Ho, Liquidated: An Ethnography of Wall Street (Durham: Duke University Press, 2009), 27-35, https://doi-org.ezp-prod1.hul.harvard.edu/10.1215/9780822391371 .

Bibliography entry:

Ho, Karen. Liquidated: An Ethnography of Wall Street . Durham: Duke University Press, 2009. https://doi-org.ezp-prod1.hul.harvard.edu/10.1215/9780822391371 .

Citing an e-book consulted outside of a database

If you are citing an e-book that you accessed outside of a database, you should indicate the format. If you read the book in a format without fixed page numbers (like Kindle, for example), you should not include the page numbers that you saw as you read. Instead, include chapter or section numbers, if possible.

1. Karen Ho, Liquidated: An Ethnography of Wall Street (Durham: Duke University Press, 2009), chap. 2, Kindle.

Ho, Karen. Liquidated: An Ethnography of Wall Street . Durham: Duke University Press, 2009. Kindle.

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• Harvard Style Bibliography | Format & Examples

Harvard Style Bibliography | Format & Examples

Published on 1 May 2020 by Jack Caulfield . Revised on 7 November 2022.

In Harvard style , the bibliography or reference list provides full references for the sources you used in your writing.

• A reference list consists of entries corresponding to your in-text citations .
• A bibliography sometimes also lists sources that you consulted for background research, but did not cite in your text.

The two terms are sometimes used interchangeably. If in doubt about which to include, check with your instructor or department.

The information you include in a reference varies depending on the type of source, but it usually includes the author, date, and title of the work, followed by details of where it was published. You can automatically generate accurate references using our free reference generator:

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Table of contents

Formatting a harvard style bibliography, harvard reference examples, referencing sources with multiple authors, referencing sources with missing information, frequently asked questions about harvard bibliographies.

Sources are alphabetised by author last name. The heading ‘Reference list’ or ‘Bibliography’ appears at the top.

Each new source appears on a new line, and when an entry for a single source extends onto a second line, a hanging indent is used:

Prevent plagiarism, run a free check.

Reference list or bibliography entries always start with the author’s last name and initial, the publication date and the title of the source. The other information required varies depending on the source type. Formats and examples for the most common source types are given below.

• Entire book
• Book chapter
• Translated book
• Edition of a book

Journal articles

• Print journal
• Online-only journal with DOI
• Online-only journal without DOI
• General web page
• Online article or blog
• Social media post

Newspapers and magazines

• Newspaper article
• Magazine article

When a source has up to three authors, list all of them in the order their names appear on the source. If there are four or more, give only the first name followed by ‘ et al. ’:

Sometimes a source won’t list all the information you need for your reference. Here’s what to do when you don’t know the publication date or author of a source.

Some online sources, as well as historical documents, may lack a clear publication date. In these cases, you can replace the date in the reference list entry with the words ‘no date’. With online sources, you still include an access date at the end:

When a source doesn’t list an author, you can often list a corporate source as an author instead, as with ‘Scribbr’ in the above example. When that’s not possible, begin the entry with the title instead of the author:

Though the terms are sometimes used interchangeably, there is a difference in meaning:

• A reference list only includes sources cited in the text – every entry corresponds to an in-text citation .
• A bibliography also includes other sources which were consulted during the research but not cited.

In Harvard referencing, up to three author names are included in an in-text citation or reference list entry. When there are four or more authors, include only the first, followed by ‘ et al. ’

In Harvard style referencing , to distinguish between two sources by the same author that were published in the same year, you add a different letter after the year for each source:

• (Smith, 2019a)
• (Smith, 2019b)

Add ‘a’ to the first one you cite, ‘b’ to the second, and so on. Do the same in your bibliography or reference list .

To create a hanging indent for your bibliography or reference list :

• Highlight all the entries
• Click on the arrow in the bottom-right corner of the ‘Paragraph’ tab in the top menu.
• In the pop-up window, under ‘Special’ in the ‘Indentation’ section, use the drop-down menu to select ‘Hanging’.
• Then close the window with ‘OK’.

Cite this Scribbr article

If you want to cite this source, you can copy and paste the citation or click the ‘Cite this Scribbr article’ button to automatically add the citation to our free Reference Generator.

Caulfield, J. (2022, November 07). Harvard Style Bibliography | Format & Examples. Scribbr. Retrieved 6 May 2024, from https://www.scribbr.co.uk/referencing/harvard-bibliography/

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bibliography

Definition of bibliography

Examples of bibliography in a sentence.

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'bibliography.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

probably from New Latin bibliographia , from Greek, the copying of books, from bibli- + -graphia -graphy

1689, in the meaning defined at sense 1

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Online Guide to Writing and Research

Academic integrity and documentation, explore more of umgc.

• Online Guide to Writing

Types of Documentation

Bibliographies and Source Lists

What is a bibliography.

A bibliography is a list of books and other source material that you have used in preparing a research paper. Sometimes these lists will include works that you consulted but did not cite specifically in your assignment. Consult the style guide required for your assignment to determine the specific title of your bibliography page as well as how to cite each source type. Bibliographies are usually placed at the end of your research paper.

What is an annotated bibliography?

A special kind of bibliography, the annotated bibliography, is often used to direct your readers to other books and resources on your topic. An instructor may ask you to prepare an annotated bibliography to help you narrow down a topic for your research assignment. Such bibliographies offer a few lines of information, typically 150-300 words, summarizing the content of the resource after the bibliographic entry.   

Example of Annotated Bibliographic Entry in MLA Style

Waddell, Marie L., Robert M. Esch, and Roberta R. Walker. The Art of Styling         Sentences: 20 Patterns for Success. 3rd ed. New York: Barron’s, 1993.         A comprehensive look at 20 sentence patterns and their variations to         teach students how to write effective sentences by imitating good style.

Mailing Address: 3501 University Blvd. East, Adelphi, MD 20783 This work is licensed under a  Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License . © 2022 UMGC. All links to external sites were verified at the time of publication. UMGC is not responsible for the validity or integrity of information located at external sites.

Table of Contents: Online Guide to Writing

Chapter 1: College Writing

How Does College Writing Differ from Workplace Writing?

What Is College Writing?

Why So Much Emphasis on Writing?

Chapter 2: The Writing Process

Doing Exploratory Research

Getting from Notes to Your Draft

Introduction

Prewriting - Techniques to Get Started - Mining Your Intuition

Prewriting: Targeting Your Audience

Prewriting: Techniques to Get Started

Prewriting: Understanding Your Assignment

Rewriting: Being Your Own Critic

Rewriting: Creating a Revision Strategy

Rewriting: Getting Feedback

Rewriting: The Final Draft

Techniques to Get Started - Outlining

Techniques to Get Started - Using Systematic Techniques

Thesis Statement and Controlling Idea

Writing: Getting from Notes to Your Draft - Freewriting

Writing: Getting from Notes to Your Draft - Summarizing Your Ideas

Writing: Outlining What You Will Write

Chapter 3: Thinking Strategies

A Word About Style, Voice, and Tone

A Word About Style, Voice, and Tone: Style Through Vocabulary and Diction

Critical Strategies and Writing

Critical Strategies and Writing: Analysis

Critical Strategies and Writing: Evaluation

Critical Strategies and Writing: Persuasion

Critical Strategies and Writing: Synthesis

Developing a Paper Using Strategies

Kinds of Assignments You Will Write

Patterns for Presenting Information

Patterns for Presenting Information: Critiques

Patterns for Presenting Information: Discussing Raw Data

Patterns for Presenting Information: General-to-Specific Pattern

Patterns for Presenting Information: Problem-Cause-Solution Pattern

Patterns for Presenting Information: Specific-to-General Pattern

Patterns for Presenting Information: Summaries and Abstracts

Supporting with Research and Examples

Writing Essay Examinations

Writing Essay Examinations: Make Your Answer Relevant and Complete

Writing Essay Examinations: Organize Thinking Before Writing

Writing Essay Examinations: Read and Understand the Question

Chapter 4: The Research Process

Planning and Writing a Research Paper

Planning and Writing a Research Paper: Ask a Research Question

Planning and Writing a Research Paper: Cite Sources

Planning and Writing a Research Paper: Collect Evidence

Planning and Writing a Research Paper: Decide Your Point of View, or Role, for Your Research

Planning and Writing a Research Paper: Draw Conclusions

Planning and Writing a Research Paper: Find a Topic and Get an Overview

Planning and Writing a Research Paper: Manage Your Resources

Planning and Writing a Research Paper: Outline

Planning and Writing a Research Paper: Survey the Literature

Planning and Writing a Research Paper: Work Your Sources into Your Research Writing

Research Resources: Where Are Research Resources Found? - Human Resources

Research Resources: What Are Research Resources?

Research Resources: Where Are Research Resources Found?

Research Resources: Where Are Research Resources Found? - Electronic Resources

Research Resources: Where Are Research Resources Found? - Print Resources

Structuring the Research Paper: Formal Research Structure

Structuring the Research Paper: Informal Research Structure

The Nature of Research

The Research Assignment: How Should Research Sources Be Evaluated?

The Research Assignment: When Is Research Needed?

The Research Assignment: Why Perform Research?

Chapter 5: Academic Integrity

Academic Integrity

Giving Credit to Sources

Giving Credit to Sources: Copyright Laws

Giving Credit to Sources: Documentation

Giving Credit to Sources: Style Guides

Integrating Sources

Practicing Academic Integrity

Practicing Academic Integrity: Keeping Accurate Records

Practicing Academic Integrity: Managing Source Material

Practicing Academic Integrity: Managing Source Material - Paraphrasing Your Source

Practicing Academic Integrity: Managing Source Material - Quoting Your Source

Practicing Academic Integrity: Managing Source Material - Summarizing Your Sources

Types of Documentation: Bibliographies and Source Lists

Types of Documentation: Citing World Wide Web Sources

Types of Documentation: In-Text or Parenthetical Citations

Types of Documentation: In-Text or Parenthetical Citations - APA Style

Types of Documentation: In-Text or Parenthetical Citations - CSE/CBE Style

Types of Documentation: In-Text or Parenthetical Citations - Chicago Style

Types of Documentation: In-Text or Parenthetical Citations - MLA Style

Types of Documentation: Note Citations

Chapter 6: Using Library Resources

Finding Library Resources

Chapter 7: Assessing Your Writing

How Is Writing Graded?

How Is Writing Graded?: A General Assessment Tool

The Draft Stage

The Draft Stage: The First Draft

The Draft Stage: The Revision Process and the Final Draft

The Draft Stage: Using Feedback

The Research Stage

Using Assessment to Improve Your Writing

Chapter 8: Other Frequently Assigned Papers

Reviews and Reaction Papers: Article and Book Reviews

Reviews and Reaction Papers: Reaction Papers

Writing Arguments

Writing Arguments: Adapting the Argument Structure

Writing Arguments: Purposes of Argument

Writing Arguments: References to Consult for Writing Arguments

Writing Arguments: Steps to Writing an Argument - Anticipate Active Opposition

Writing Arguments: Steps to Writing an Argument - Determine Your Organization

Writing Arguments: Steps to Writing an Argument - Develop Your Argument

Writing Arguments: Steps to Writing an Argument - Introduce Your Argument

Writing Arguments: Steps to Writing an Argument - State Your Thesis or Proposition

Writing Arguments: Steps to Writing an Argument - Write Your Conclusion

Writing Arguments: Types of Argument

Appendix A: Books to Help Improve Your Writing

Dictionaries

General Style Manuals

Researching on the Internet

Special Style Manuals

Writing Handbooks

Appendix B: Collaborative Writing and Peer Reviewing

Collaborative Writing: Assignments to Accompany the Group Project

Collaborative Writing: Informal Progress Report

Collaborative Writing: Issues to Resolve

Collaborative Writing: Methodology

Collaborative Writing: Peer Evaluation

Collaborative Writing: Tasks of Collaborative Writing Group Members

Collaborative Writing: Writing Plan

General Introduction

Peer Reviewing

Appendix C: Developing an Improvement Plan

Working with Your Instructor’s Comments and Grades

Appendix D: Writing Plan and Project Schedule

Devising a Writing Project Plan and Schedule

Reviewing Your Plan with Others

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31 Bibliography

Annotated bibliography.

A  bibliography  is an alphabetized list of sources showing the author, date, and publication information for each source.

An  annotation  is like a note; it’s a brief paragraph that explains what the writer learned from the source.

Annotated bibliographies combine bibliographies and brief notes about the sources.

Writers often create annotated bibliographies as a part of a research project, as a means of recording their thoughts and deciding which sources to actually use to support the purpose of their research. Some writers include annotated bibliographies at the end of a research paper as a way of offering their insights about the source’s usability to their readers.

Instructors in college often assign annotated bibliographies as a means of helping students think through their source’s quality and appropriateness to their research question or topic.  (23)

Formatting the Annotated Bibliography

The  citations  (bibliographic information – title, date, author, publisher, etc.) in the annotated bibliography are formatted using the particular style manual (APA, MLA, Chicago, etc.) that your discipline requires.

Annotations  are written in paragraph form, usually 3-7 sentences (or 80-200 words). Depending on your assignment your annotations will generally include the following:

• Summary:  Summarize the information given in the source. Note the intended audience. What are the main arguments? What is the point of this book or article? What topics are covered? If someone asked what this article/book is about, what would you say?
• Evaluate/Assess:  Is this source credible? Who wrote it? What are their credentials? Who is the publisher? Is it a useful source? How does it compare with other sources in your bibliography? Is the information reliable? Is this source biased or objective? What is the goal of this source?
• Reflect/React:  Once you’ve summarized and assessed a source, you need to ask how it fits into your research. State your reaction and any additional questions you have about the information in your source. Was this source helpful to you? How does it help you shape your argument? How can you use this source in your research project? Has it changed how you think about your topic? Compare each source to other sources in your annotated bibliography in terms of its usefulness and thoroughness in helping answer your research question.  (24)

Annotated Bibliography Examples

In the following examples, the bold font indicates the reflection component of the annotation that is sometimes required in an assignment.

APA style 6  th  edition for the journal citation:

Waite, L. J., Goldschneider, F. K., & Witsberger, C. (1986). Nonfamily living and the erosion of traditional family orientations among young adults.  American Sociological Review  , 51, 541-554.

The authors, researchers at the Rand Corporation and Brown University, use data from the National Longitudinal Surveys of Young Women and Young Men to test their hypothesis that nonfamily living by young adults alters their attitudes, values, plans, and expectations, moving them away from their belief in traditional sex roles. They find their hypothesis strongly supported in young females, while the effects were fewer in studies of young males. Increasing the time away from parents before marrying increased individualism, self-sufficiency, and changes in attitudes about families.  In contrast, an earlier study by Williams cited below shows no significant gender differences in sex role attitudes as a result of nonfamily living.  (25)

MLA 8 style for a website citation:

Anderson, L.V. “Can You Libel Someone on Twitter?” Slate.com, The Slate Group, A Graham Holdings. Company, 26 Nov. 2012, http://www.slate.com/articles/technology/explainer/2012/11/libel_on_twitter_you_can_be_sued_for_libel_for_what_you_write_on_facebook.html . Accessed 2 Apr. 2018.

This article provides an overview of defamation law in the United States compared to the United Kingdom, in layman’s terms. It also explains how defamation law applies to social media platforms and individuals who use social media. Libelous comments posted on social media can be subject to lawsuit, depending on the content of the statement, and whether the person is a public or private figure. The article is found on the website, Slate.com, which is a web-based daily magazine that focuses on general interest topics. While the writer’s credentials are unavailable, she does thank Sandra S. Baron, Executive Director of the Media Law Resource Center and Jeff Hermes, director of the Digital Media Law Project for providing information. She also links to the United States laws that she cites.  I would use the article to compare United States law to United Kingdom law and for background information.  (1)

Information creation is a process. Scholars produce information in the forms of peer-reviewed journal articles, books, and conference presentations, to name a few. As a student researcher, you will be expected to create research projects such as essays, reports, visual presentations, and annotated bibliographies. Most scholarly writing makes an argument—whether it is to persuade your readers that your claim is true or to act on it. In order to create a sound argument, you must gather sources that will argue and counter-argue your claims.

When creating an argument, the researcher typically organizes their report or presentation with the claim/thesis at the beginning, which answers their research question. Then they provide reasons and supporting evidence to validate their claim. They acknowledge and respond to counter-arguments by citing sources that disagree with them, and refuting or conceding those counter-claims. Their conclusion restates their thesis and discusses why their research is important to the scholarly conversation, as well as potential areas for further research.

A Roman numeral outline is one way to organize your argument before you begin writing. It helps to identify sources for each section of your outline, so you know if you need further research to support your argument.

An annotated bibliography is one way to present research, and can be used as a cumulative assignment, or a precursor to your actual research paper. A good annotated bibliography will provide a variety of sources that met all your research needs—background, evidence, argument, and method. In other words, you should be able to take your annotated bibliography and write a complete research report based on those sources.  (1)

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What is Bibliography?: Meaning, Types, and Importance

A bibliography is a fundamental component of academic research and writing that serves as a comprehensive list of sources consulted and referenced in a particular work. It plays a crucial role in validating the credibility and reliability of the information presented by providing readers with the necessary information to locate and explore the cited sources. A well-constructed bibliography not only demonstrates the depth and breadth of research undertaken but also acknowledges the intellectual contributions of others, ensuring transparency and promoting the integrity of scholarly work. By including a bibliography, writers enable readers to delve further into the subject matter, engage in critical analysis, and build upon existing knowledge.

1.1 What is a Bibliography?

A bibliography is a compilation of sources that have been utilized in the process of researching and writing a piece of work. It serves as a comprehensive list of references, providing information about the various sources consulted, such as books, articles, websites, and other materials. The purpose of a bibliography is twofold: to give credit to the original authors or creators of the sources used and to allow readers to locate and access those sources for further study or verification. A well-crafted bibliography includes essential details about each source, including the author’s name, the title of the work, publication date, and publication information. By having a bibliography, writers demonstrate the extent of their research, provide a foundation for their arguments, and enhance the credibility and reliability of their work.

1.2 Types of Bibliography.

The bibliography is a multifaceted discipline encompassing different types, each designed to serve specific research purposes and requirements. These various types of bibliographies provide valuable tools for researchers, scholars, and readers to navigate the vast realm of literature and sources available. From comprehensive overviews to specialized focuses, the types of bibliographies offer distinct approaches to organizing, categorizing, and presenting information. Whether compiling an exhaustive list of sources, providing critical evaluations, or focusing on specific subjects or industries, these types of bibliographies play a vital role in facilitating the exploration, understanding, and dissemination of knowledge in diverse academic and intellectual domains.

As a discipline, a bibliography encompasses various types that cater to different research needs and contexts. The two main categories of bibliographies are

1. General bibliography, and 2. Special bibliography.

1.2.1. General Bibliography:

A general bibliography is a comprehensive compilation of sources covering a wide range of subjects, disciplines, and formats. It aims to provide a broad overview of published materials, encompassing books, articles, journals, websites, and other relevant resources. A general bibliography typically includes works from various authors, covering diverse topics and spanning different periods. It is a valuable tool for researchers, students, and readers seeking a comprehensive collection of literature within a specific field or across multiple disciplines. General bibliographies play a crucial role in guiding individuals in exploring a subject, facilitating the discovery of relevant sources, and establishing a foundation for further research and academic pursuits.

The general bibliography encompasses various subcategories that comprehensively cover global, linguistic, national, and regional sources. These subcategories are as follows:

• Universal Bibliography: Universal bibliography aims to compile a comprehensive list of all published works worldwide, regardless of subject or language. It seeks to encompass human knowledge and includes sources from diverse fields, cultures, and periods. Universal bibliography is a monumental effort to create a comprehensive record of the world’s published works, making it a valuable resource for scholars, librarians, and researchers interested in exploring the breadth of human intellectual output.
• Language Bibliography: Language bibliography focuses on compiling sources specific to a particular language or group of languages. It encompasses publications written in a specific language, regardless of the subject matter. Language bibliographies are essential for language scholars, linguists, and researchers interested in exploring the literature and resources available in a particular language or linguistic group.
• National Bibliography: The national bibliography documents and catalogs all published materials within a specific country. It serves as a comprehensive record of books, journals, periodicals, government publications, and other sources published within a nation’s borders. National bibliographies are essential for preserving a country’s cultural heritage, facilitating research within specific national contexts, and providing a comprehensive overview of a nation’s intellectual output.
• Regional Bibliography: A regional bibliography compiles sources specific to a particular geographic region or area. It aims to capture the literature, publications, and resources related to a specific region, such as a state, province, or local area. Regional bibliographies are valuable for researchers interested in exploring a specific geographic region’s literature, history, culture, and unique aspects.

1.2.2. Special Bibliography:

Special bibliography refers to a type of bibliography that focuses on specific subjects, themes, or niche areas within a broader field of study. It aims to provide a comprehensive and in-depth compilation of sources specifically relevant to the chosen topic. Special bibliographies are tailored to meet the research needs of scholars, researchers, and enthusiasts seeking specialized information and resources.

Special bibliographies can cover a wide range of subjects, including but not limited to specific disciplines, subfields, historical periods, geographical regions, industries, or even specific authors or works. They are designed to gather and present a curated selection of sources considered important, authoritative, or influential within the chosen subject area.

Special bibliography encompasses several subcategories that focus on specific subjects, authors, forms of literature, periods, categories of literature, and types of materials. These subcategories include:

• Subject Bibliography: Subject bibliography compiles sources related to a specific subject or topic. It aims to provide a comprehensive list of resources within a particular field. Subject bibliographies are valuable for researchers seeking in-depth information on a specific subject area, as they gather relevant sources and materials to facilitate focused research.
• Author and Bio-bibliographies: Author and bio-bibliographies focus on compiling sources specific to individual authors. They provide comprehensive lists of an author’s works, including their books, articles, essays, and other publications. Bio-bibliographies include biographical information about the author, such as their background, career, and contributions to their respective fields.
• Bibliography of Forms of Literature: This bibliography focuses on specific forms or genres of literature, such as poetry, drama, fiction, or non-fiction. It provides a compilation of works within a particular literary form, enabling researchers to explore the literature specific to their interests or to gain a comprehensive understanding of a particular genre.
• Bibliography of Materials of Particular Periods: Bibliographies of materials of particular periods compile sources specific to a particular historical period or time frame. They include works published or created during that period, offering valuable insights into the era’s literature, art, culture, and historical context.
• Bibliographies of Special Categories of Literature: This category compiles sources related to special categories or themes. Examples include bibliographies of children’s literature, feminist literature, postcolonial literature, or science fiction literature. These bibliographies cater to specific interests or perspectives within the broader field of literature.
• Bibliographies of Specific Types of Materials: Bibliographies of specific materials focus on compiling sources within a particular format or medium. Examples include bibliographies of manuscripts, rare books, visual art, films, or musical compositions. These bibliographies provide valuable resources for researchers interested in exploring a specific medium or format.

1.3 Functions of Bibliography

A bibliography serves several important functions in academic research, writing, and knowledge dissemination. Here are some key functions:

• Documentation: One of the primary functions of a bibliography is to document and record the sources consulted during the research process. By providing accurate and detailed citations for each source, it can ensure transparency, traceability, and accountability in scholarly work. It allows readers and other researchers to verify the information, trace the origins of ideas, and locate the original sources for further study.
• Attribution and Credit: The bibliography plays a crucial role in giving credit to the original authors and creators of the ideas, information, and materials used in research work. By citing the sources, the authors acknowledge the intellectual contributions of others and demonstrate academic integrity. This enables proper attribution and prevents plagiarism, ensuring ethical research practices and upholding the principles of academic honesty.
• Verification and Quality Control: It acts as a means of verification and quality control in academic research. Readers and reviewers can assess the information’s reliability, credibility, and accuracy by including a list of sources. This allows others to evaluate the strength of the evidence, assess the validity of the arguments, and determine the scholarly rigor of a work.
• Further Reading and Exploration: The bibliography is valuable for readers who wish to delve deeper into a particular subject or topic. By providing a list of cited sources, the bibliography offers a starting point for further reading and exploration. It guides readers to related works, seminal texts, and authoritative materials, facilitating their intellectual growth and expanding their knowledge base.
• Preservation of Knowledge: The bibliography contributes to the preservation of knowledge by cataloguing and documenting published works. It records the intellectual output within various fields, ensuring that valuable information is not lost over time. A bibliography facilitates the organization and accessibility of literature, making it possible to locate and retrieve sources for future reference and research.
• Intellectual Dialogue and Scholarship: The bibliography fosters intellectual dialogue and scholarship by facilitating the exchange of ideas and enabling researchers to build upon existing knowledge. By citing relevant sources, researchers enter into conversations with other scholars, engaging in a scholarly discourse that advances knowledge within their field of study.

A bibliography serves the important functions of documenting sources, crediting original authors, verifying information, guiding further reading, preserving knowledge, and fostering intellectual dialogue. It plays a crucial role in maintaining academic research’s integrity, transparency, and quality and ensures that scholarly work is built upon a solid foundation of evidence and ideas.

1.4 Importance of Bibliographic Services

Bibliographic services are crucial in academia, research, and information management. They are a fundamental tool for organizing, accessing, and preserving knowledge . From facilitating efficient research to ensuring the integrity and credibility of scholarly work, bibliographic services hold immense importance in various domains.

Bibliographic services are vital for researchers and scholars. These services provide comprehensive and reliable access to various resources, such as books, journals, articles, and other scholarly materials. By organizing these resources in a structured manner, bibliographic services make it easier for researchers to locate relevant information for their studies. Researchers can explore bibliographic databases, catalogues, and indexes to identify appropriate sources, saving them valuable time and effort. This accessibility enhances the efficiency and effectiveness of research, enabling scholars to stay up-to-date with the latest developments in their fields.

Bibliographic services also aid in the process of citation and referencing. Proper citation is an essential aspect of academic integrity and intellectual honesty. Bibliographic services assist researchers in accurately citing the sources they have used in their work, ensuring that credit is given where it is due. This not only acknowledges the original authors and their contributions but also strengthens the credibility and authenticity of the research. By providing citation guidelines, formatting styles, and citation management tools, bibliographic services simplify the citation process, making it more manageable for researchers.

Another crucial aspect of bibliographic services is their role in preserving and archiving knowledge. Libraries and institutions that provide bibliographic services serve as custodians of valuable information. They collect, organize, and preserve various physical and digital resources for future generations. This preservation ensures that knowledge is not lost or forgotten over time. Bibliographic services enable researchers, students, and the general public to access historical and scholarly materials, fostering continuous learning and intellectual growth.

Bibliographic services contribute to the dissemination of research and scholarly works. They provide platforms and databases for publishing and sharing academic outputs. By cataloguing and indexing research articles, journals, and conference proceedings, bibliographic services enhance the discoverability and visibility of scholarly work. This facilitates knowledge exchange, collaboration, and innovation within academic communities. Researchers can rely on bibliographic services to share their findings with a broader audience, fostering intellectual dialogue and advancing their respective fields.

In Summary, bibliographic services are immensely important in academia, research, and information management. They facilitate efficient analysis, aid in proper citation and referencing, preserve knowledge for future generations, and contribute to the dissemination of research. These services form the backbone of scholarly pursuits, enabling researchers, students, and professionals to access, utilize, and contribute to the vast wealth of knowledge available. As we continue to rely on information and research to drive progress and innovation, the significance of bibliographic services will only grow, making them indispensable resources in pursuing knowledge.

References:

• Reddy, P. V. G. (1999). Bio bibliography of the faculty in social sciences departments of Sri Krishnadevaraya university Anantapur A P India.
• Sharma, J.S. Fundamentals of Bibliography, New Delhi : S. Chand & Co.. Ltd.. 1977.  p.5.
• Quoted in George Schneider, Theory of History of Bibliography. Ralph Robert Shaw, trans., New York : Scare Crow Press, 1934, p.13.
• Funk Wagnalls Standard Dictionary of the English language – International ed – Vol. I – New York : Funku Wagnalls Co., C 1965, p. 135.
• Shores, Louis. Basic reference sources. Chicago : American Library Association, 1954. p. 11-12.
• Ranganathan, S.R., Documentation and its facts. Bombay : Asia Publishing House. 1963. p.49.
• Katz, William A. Introduction to reference work. 4th ed. New York : McGraw Hill, 1982. V. 1, p.42.
• Robinson, A.M.L. Systematic Bibliography. Bombay : Asia Publishing House, 1966. p.12.
• Chakraborthi, M.L. Bibliography : In Theory and practice, Calcutta : The World press (P) Ltd.. 1975. p.343.

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National bibliography, bibliographic services.

This site was… how do I say it? Relevant!! Finally I’ve found something which helped me. Thanks!

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Thank for your detailed explanation,the work really help me to understand bibliography more than I knew it before.

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Bibliography Research

Introduction.

• National Bibliography
• Personal Bibliography
• Corporate Bibliography
• Subject Bibliography
• Catalog & Bibliographies
• Other Tools for Finding Bibliographies

A bibliography is a list of documents, usually published documents like books and articles. This type of bibliography is more accurately called "enumerative bibliography". An enumerative bibliography will attempt to be as comprehensive as possible, within whatever parameters established by the bibliographer.

Bibliographies will list both secondary and primary sources. They are perhaps most valuable to historians for identifying primary sources. (They are still useful for finding secondary sources, but increasingly historians rely on electronic resources, like article databases, to locate secondary sources.)

Think of a bibliography as a guide to the source base for a specific field of inquiry. A high quality bibliography will help you understand what kinds of sources are available, but also what kinds of sources are not available (either because they were never preserved, or because they were never created in the first place).

Take for example the following bibliography:  

British autobiographies; an annotated bibliography of British autobiographies published or written before 1951 by William Matthews

Call number:  Z2027 .A9 M3 1955

Publication date: 1955

Like many bibliographies, this one includes an introduction or prefatory essay that gives a bibliographic overview of the topic. If you were hoping to use autobiographies for a paper on medieval history, the following information from the preface would save you from wasting your time in a fruitless search:

The essay explains that autobiography does not become an important historical source until the early modern period:

Finally, the essay informs us that these early modern autobiographies are predominantly religious in nature--a useful piece of information if we were hoping to use them as evidence of, for example, the early modern textile trade:

All bibliographies are organized differently, but the best include indexes that help you pinpoint the most relevant entries.

A smart researcher will also use the index to obtain an overview of the entire source base: the index as a whole presents a broad outline of the available sources--the extent of available sources, as well as the the strengths and weaknesses of the source base. Browsing the subject index, if there is one, is often an excellent method of choosing a research topic because it enables you quickly to rule out topics that cannot be researched due to lack of primary sources.

The index to  British Autobiographies , for example, tells me that I can find many autobiographies that document British social clubs (like White's and Boodle's), especially from the 19th century:

Unlike indexes you might be familiar with from non-fiction books, the indexes in bibliographies usually reference specific entries, not page numbers.

A bibliography's index will often help guide you systematically through the available sources, as in this entry which prompts you to look under related index entries for even more sources:

Types of Bibliographies

There are four main types of enumerative bibliographies used for historical research:

enumerative bibliography: 

1. Enumerative bibliography: the listing of books according to some system or reference plan, for example, by author, by subject, or by date. The implication is that the listings will be short, usually providing only the author's name, the book's title, and date and place of publication. Enumerative bibliography (sometimes called systematic bibliography) attempts to record and list, rather than to describe minutely. Little or no information is likely to be provided about physical aspects of the book such as paper, type, illustrations, or binding. A library's card catalog is an example of an enumerative bibliography, and so is the list at the back of a book of works consulted, or a book like the New Cambridge Bibliography of English Literature, which catalogues briefly the works of English writers and the important secondary material about them. ...  (from McGill Library) 

Read more from their lecture on bibliographies from this linked Word Doc: Lecture I Discussion

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What's a Bibliography?

A bibliography is a list of all of the sources you have used (whether referenced or not) in the process of researching your work. In general, a bibliography should include:

• the authors' names
• the titles of the works
• the names and locations of the companies that published your copies of the sources
• the dates your copies were published
• the page numbers of your sources (if they are part of multi-source volumes)

OK, So What's an Annotated Bibliography?

An annotated bibliography is the same as a bibliography with one important difference: in an annotated bibliography, the bibliographic information is followed by a brief description of the content, quality, and usefulness of the source.

OK, So How Is a Bibliography Different from a "Works Cited" or "References" List?

The Works Cited or References list is only comprised of references to those items actually cited in the paper.

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Bibliographic research

The search and collection of information from published sources (books, journals, newspapers, etc.) nowadays may include other types of documents, such as websites, reports from bibliographic databases, etc.

Searching for bibliographic sources relevant to your project is an integral and unavoidable part of the thesis work.

To find out how to conduct your bibliographic research, we suggest you consult the Bibliographic Research Guide .

For a start, you can consult the Library books on academic writing (how to write assignments, presentations, theses ...):

Literature review

Literature review is the analysis of the academic literature (articles, books, dissertations, theses, etc.) that you have identified when performing your search on the topic.

A review of the relevant literature for the topic selected is a key element of any academic project (dissertation or PhD thesis, writing an article for an academic journal…) for several reasons:

• it provides you with the conceptual context for your research

• it allows you to acquire, deepen and organize knowledge in the chosen research area

• helps you define or better focus your research objectives

Furthermore, its objectives are:

• describing the state-of-the-art on the given subject (what is the knowledge achieved so far in the research area in which your project fits?)
• identifying strengths and weaknesses, potential gaps in the current knowledge, unexplored empirical issues, or issues that need to be updated
• understanding how the research question is positioned within the field (to what extent does your work provide an original contribution to the research context?)

Want to learn more about the literature review? Explore the Project Planner on SAGE Research Methods .

If you notice that a significant book or resource is not included in the Library collections, please let us know : the Library will consider acquiring it!

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Gain-of -function research is more than just tweaking risky viruses – it’s a routine and essential tool in all biology research

Associate Professor of Microbiology and Immunology at Emory University and Adjunct Professor Microbiology and Molecular Genetics, University of Pittsburgh

Associate Professor of Microbiology and Immunology, Emory University

Disclosure statement

Seema Lakdawala receives funding from National Institutes of Health and the Flu Lab.

Anice Lowen receives research funding from the National Institutes of Health and Flu Lab.

University of Pittsburgh provides funding as a member of The Conversation US.

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The term “gain of function” is often taken to refer to research with viruses that puts society at risk of an infectious disease outbreak for questionable gain. Some research on emerging viruses can result in variants that gain the ability to infect people but this does not necessarily mean the research is dangerous or that it is not fruitful. Concerns have focused on lab research on the virus that causes bird flu in 2012 and on the virus that causes COVID-19 since 2020. The National Institutes of Health had previously implemented a three-year moratorium on gain-of-function research on certain viruses, and some U.S. legislatures have proposed bills prohibiting gain-of-function research on “potentially pandemic pathogens.”

The possibility that a genetically modified virus could escape the lab needs to be taken seriously. But it does not mean that gain-of-function experiments are inherently risky or the purview of mad scientists. In fact, gain-of-function approaches are a fundamental tool in biology used to study much more than just viruses, contributing to many, if not most, modern discoveries in the field, including penicillin , cancer immunotherapies and drought-resistant crops .

As scientists who study viruses , we believe that misunderstanding the term “gain of function” as something nefarious comes at the cost of progress in human health, ecological sustainability and technological advancement. Clarifying what gain-of-function research really is can help clarify why it is an essential scientific tool.

What is gain of function?

To study how a living thing operates, scientists can change a specific part of it and then observe the effects. These changes sometimes result in the organism’s gaining a function it didn’t have before or losing a function it once had.

For example, if the goal is to enhance the tumor-killing ability of immune cells, researchers can take a sample of a person’s immune cells and modify them to express a protein that specifically targets cancer cells. This mutated immune cell, called a CAR-T cell thereby “gains the function” of being able to bind to cancerous cells and kill them. The advance of similar immunotherapies that help the immune system attack cancer cells is based on the exploratory research of scientists who synthesized such “ Frankenstein” proteins in the 1980s. At that time, there was no way to know how useful these chimeric proteins would be to cancer treatment today, some 40 years later.

Similarly, by adding specific genes into rice, corn or wheat plants that increase their production in diverse climates, scientists have been able to produce plants that are able to grow and thrive in geographical regions they previously could not. This is a critical advance to maintain food supplies in the face of climate change. Well-known examples of food sources that have their origins in gain-of-function research include rice plants that can grow in high flood plains or in drought conditions or that contain vitamin A to reduce malnutrition.

Medical advances from gain-of-function research

Gain-of-function experiments are ingrained in the scientific process. In many instances, the benefits that stem from gain-of-function experiments are not immediately clear. Only decades later does the research bring a new treatment to the clinic or a new technology within reach.

The development of most antibiotics have relied on the manipulation of bacteria or mold in gain-of-function experiments. Alexander Fleming’s initial discovery that the mold Penicillium rubens could produce a compound toxic to bacteria was a profound medical advance. But it wasn’t until scientists experimented with growth conditions and mold strains that therapeutic use of penicillin became feasible. Using a specific growth medium allowed the mold to gain the function of increased penicillin production, which was essential for its mass production and widespread use as a drug.

Research on antibiotic resistance also relies heavily on gain-of-function approaches. Studying how bacteria gain resistance against drugs is essential to developing new treatments microbes are unable to evade quickly.

Gain-of-function research in virology has also been critical to the advancement of science and health. Oncolytic viruses are genetically modified in the laboratory to infect and kill cancerous cells like melanoma. Similarly, the Johnson & Johnson COVID-19 vaccine contains an adenovirus altered to produce the spike protein that helps the COVID-19 virus infect cells. Scientists developed live attenuated flu vaccines by adapting them to grow at low temperatures and thereby lose the ability to grow at human lung temperatures.

By giving viruses new functions, scientists were able to develop new tools to treat and prevent disease.

Nature’s gain-of-function experiments

Gain-of-function approaches are needed to advance understanding of viruses in part because these processes already occur in nature.

Many viruses that infect such nonhuman animals as bats, pigs, birds and mice have the potential to spill over into people . Every time a virus copies its genome, it makes mistakes. Most of these mutations are detrimental – they reduce a virus’s ability to replicate – but some may allow a virus to replicate faster or better in human cells. Variant viruses with these rare, beneficial mutations will spread better than other variants and therefore come to dominate the viral population – that is how natural selection works .

If these viruses can replicate even a little bit within people, they have the potential to adapt and thereby thrive in their new human hosts. That is nature’s gain-of-function experiment, and it is happening constantly .

Gain-of-function experiments in the lab can help scientists anticipate the changes viruses may undergo in nature by understanding what specific features allow them to transmit between people and infect them. In contrast to nature’s experiments, these are conducted in highly controlled lab conditions designed to limit infection risk to laboratory personnel and others, including air flow control, personal protective equipment and waste sterilization.

It is important that researchers carefully observe lab safety to minimize the theoretical risk of infecting the general population. It is equally important that virologists continue to apply the tools of modern science to gauge the risk of natural viral spillovers before they become outbreaks.

A bird flu outbreak is currently raging across multiple continents. While the H5N1 virus is primarily infecting birds, some people have gotten sick too. More spillover events can change the virus in ways that would allow it to transmit more efficiently among people , potentially leading to a pandemic.

Scientists have a better appreciation of the tangible risk of bird flu spillover because of gain-of-function experiments published a decade ago . Those lab studies showed that bird flu viruses could be transmitted through the air between ferrets within a few feet of one another. They also revealed multiple features of the evolutionary path the H5N1 virus would need to take before it becomes transmissible in mammals, informing what signatures researchers need to look out for during surveillance of the current outbreak.

Oversight on gain of function

Perhaps this sounds like a semantic argument, and in many respects it is. Many researchers would likely agree that gain of function as a general tool is an important way to study biology that should not be restricted, while also arguing that it should be curtailed for research on specific dangerous pathogens. The problem with this argument is that pathogen research needs to include gain-of-function approaches in order to be effective – just as in any area of biology.

Oversight of gain-of-function research on potential pandemic pathogens already exists. Multiple layers of safety measures at the institutional and national levels minimize the risks of virus research.

While updates to current oversight are not unreasonable, we believe that blanket bans or additional restrictions on gain-of-function research do not make society safer. They may instead slow research in areas ranging from cancer therapies to agriculture. Clarifying which specific research areas are of concern regarding gain-of-function approaches can help identify how the current oversight framework can be improved.

• Antibiotics
• Avian flu H5N1
• Golden rice
• Immunotherapy
• Cancer immunotherapy
• Penicillin antibiotics
• Laboratory studies
• COVID-19 vaccines
• Gain-of-function
• Gain of function

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A Peek Inside the Brains of ‘Super-Agers’

New research explores why some octogenarians have exceptional memories.

By Dana G. Smith

When it comes to aging, we tend to assume that cognition gets worse as we get older. Our thoughts may slow down or become confused, or we may start to forget things, like the name of our high school English teacher or what we meant to buy at the grocery store.

But that’s not the case for everyone.

For a little over a decade, scientists have been studying a subset of people they call “super-agers.” These individuals are age 80 and up, but they have the memory ability of a person 20 to 30 years younger.

Most research on aging and memory focuses on the other side of the equation — people who develop dementia in their later years. But, “if we’re constantly talking about what’s going wrong in aging, it’s not capturing the full spectrum of what’s happening in the older adult population,” said Emily Rogalski, a professor of neurology at the University of Chicago, who published one of the first studies on super-agers in 2012.

A paper published Monday in the Journal of Neuroscience helps shed light on what’s so special about the brains of super-agers. The biggest takeaway, in combination with a companion study that came out last year on the same group of individuals, is that their brains have less atrophy than their peers’ do.

The research was conducted on 119 octogenarians from Spain: 64 super-agers and 55 older adults with normal memory abilities for their age. The participants completed multiple tests assessing their memory, motor and verbal skills; underwent brain scans and blood draws; and answered questions about their lifestyle and behaviors.

The scientists found that the super-agers had more volume in areas of the brain important for memory, most notably the hippocampus and entorhinal cortex. They also had better preserved connectivity between regions in the front of the brain that are involved in cognition. Both the super-agers and the control group showed minimal signs of Alzheimer’s disease in their brains.

“By having two groups that have low levels of Alzheimer’s markers, but striking cognitive differences and striking differences in their brain, then we’re really speaking to a resistance to age-related decline,” said Dr. Bryan Strange, a professor of clinical neuroscience at the Polytechnic University of Madrid, who led the studies.

These findings are backed up by Dr. Rogalski’s research , initially conducted when she was at Northwestern University, which showed that super-agers’ brains looked more like 50- or 60-year-olds’ brains than their 80-year-old peers. When followed over several years, the super-agers’ brains atrophied at a slower rate than average.

No precise numbers exist on how many super-agers there are among us, but Dr. Rogalski said they’re “relatively rare,” noting that “far less than 10 percent” of the people she sees end up meeting the criteria.

But when you meet a super-ager, you know it, Dr. Strange said. “They are really quite energetic people, you can see. Motivated, on the ball, elderly individuals.”

Experts don’t know how someone becomes a super-ager, though there were a few differences in health and lifestyle behaviors between the two groups in the Spanish study. Most notably, the super-agers had slightly better physical health, both in terms of blood pressure and glucose metabolism, and they performed better on a test of mobility . The super-agers didn’t report doing more exercise at their current age than the typical older adults, but they were more active in middle age. They also reported better mental health .

But overall, Dr. Strange said, there were a lot of similarities between the super-agers and the regular agers. “There are a lot of things that are not particularly striking about them,” he said. And, he added, “we see some surprising omissions, things that you would expect to be associated with super-agers that weren’t really there.” For example, there were no differences between the groups in terms of their diets, the amount of sleep they got, their professional backgrounds or their alcohol and tobacco use.

The behaviors of some of the Chicago super-agers were similarly a surprise. Some exercised regularly, but some never had; some stuck to a Mediterranean diet, others subsisted off TV dinners; and a few of them still smoked cigarettes. However, one consistency among the group was that they tended to have strong social relationships , Dr. Rogalski said.

“In an ideal world, you’d find out that, like, all the super-agers, you know, ate six tomatoes every day and that was the key,” said Tessa Harrison, an assistant project scientist at the University of California, Berkeley, who collaborated with Dr. Rogalski on the first Chicago super-ager study.

Instead, Dr. Harrison continued, super-agers probably have “some sort of lucky predisposition or some resistance mechanism in the brain that’s on the molecular level that we don’t understand yet,” possibly related to their genes.

While there isn’t a recipe for becoming a super-ager, scientists do know that, in general , eating healthily, staying physically active, getting enough sleep and maintaining social connections are important for healthy brain aging.

Dana G. Smith is a Times reporter covering personal health, particularly aging and brain health. More about Dana G. Smith

A Guide to Aging Well

Looking to grow old gracefully we can help..

The “car key conversation,” when it’s time for an aging driver to hit the brakes, can be painful for families to navigate . Experts say there are ways to have it with empathy and care.

Calorie restriction and intermittent fasting both increase longevity in animals, aging experts say. Here’s what that means for you .

Researchers are investigating how our biology changes as we grow older — and whether there are ways to stop it .

You need more than strength to age well — you also need power. Here’s how to measure how much power you have  and here’s how to increase yours .

Ignore the hyperbaric chambers and infrared light: These are the evidence-backed secrets to aging well .

Your body’s need for fuel shifts as you get older. Your eating habits should shift , too.

People who think positively about getting older often live longer, healthier lives. These tips can help you reconsider your perspective .

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Key takeaways

• J.P. Morgan Research forecasts that the GLP-1 market will exceed $100 bn by 2030, driven equally by diabetes and obesity usage.
• Total GLP-1 users in the U.S. may number 30 mn by 2030 — or around 9% of the overall population.
• The increasing appetite for obesity drugs will have myriad implications, boosting sectors such as biotech and creating headwinds for industries such as food and beverage.

Ozempic. Wegovy. Mounjaro. Zepbound. Originally developed to treat diabetes, these GLP-1 agonists — now also popularly known as obesity drugs — have been making headlines for their weight-loss effects. According to the Centers for Disease Control and Prevention (CDC), the prevalence of obesity in the U.S. has grown from 30.5% over 1999–2000 to 41.9% over 2017–2020.

What’s whetting the consumer appetite for these weight-loss drugs, and what does this mean for sectors ranging from biotech to food? 

“The newest generations of GLP-1s and combos lead to 15–25+% weight loss on average, well above prior generations of products.”

Chris Schott

Senior Analyst covering the U.S. Diversified Biopharma sector, J.P. Morgan

What are GLP-1 agonists?  

Glp-1 agonists are a class of medications used to treat type 2 diabetes (t2d). besides helping to lower blood sugar levels, they also suppress appetite and reduce calorie intake — fueling their growing popularity as obesity drugs. , “glp-1s have been used to treat t2d since 2005, starting with the approval of byetta, with follow-on products continually improving on efficacy. the most recent, ozempic and mounjaro, offer significant advantages over previous products and have accelerated class growth,” said chris schott, a senior analyst covering the u.s. diversified biopharma sector at j.p. morgan. “indeed, the newest generations of glp-1s and combos lead to 15–25+% weight loss on average, well above prior generations of products.” .

What’s driving the increase in appetite for obesity drugs?

Originally developed to treat diabetes, GLP-1 agonists — or obesity drugs — have risen in popularity thanks to their weight-loss effects.

J.P. Morgan Research forecasts the GLP-1 market will exceed $100 bn by 2030, fueled equally by diabetes and obesity usage.

Total GLP-1 users in the U.S. may number 30 mn by 2030 — or around 9% of the overall population.

This could lead to a paradigm shift in health care and also impact other sectors, from biotech to food.

What’s the market for obesity drugs?

J.p. morgan research forecasts the glp-1 category will exceed $100 bn by 2030, driven equally by diabetes and obesity usage. , today, glp-1s are used by around 10-12% of t2d patients in the u.s. “we model glp-1 usage expanding to around 35% of diabetics in the u.s. in 2030 and would not be surprised to see upside to this number, especially as outcomes data continues to emerge,” schott noted. “in addition, we forecast that around 15 mn obese patients will be on glp-1s by the end of the decade.” overall, total glp-1 users in the u.s. may number 30 mn by 2030 — or around 9% of the population. , the glp-1 landscape is currently dominated by two major players: u.s.-based eli lilly and denmark-based novo nordisk. “we expect the obesity market to largely be a duopoly between both companies, with modest share attributed to later entrants,” schott said. “while demand could continue to outstrip supply for the next several years, we do see these issues resolving in the longer term with more plants coming online and more competitive oral options becoming available.” , the u.s. obesity market is expanding rapidly .

The U.S. obesity market is forecast to reach $44 bn in 2030 — up from just $0.5 bn in 2020.

Sector implications

What this means for … health care.

The growing popularity of GLP-1s could transform how obesity is viewed and managed. “We believe this marks the beginning of a paradigm shift in the way that obesity is treated, with physicians moving to a weight-centric treatment of multiple co-morbidities associated with the condition. We expect this to drive substantial uptake of GLP-1s,” said Richard Vosser, Head of European Pharma & Biotech at J.P. Morgan. For instance, GLP-1s may aid in the management of cardiovascular disease and heart failure, which around 9 mn obese patients suffer from. 

Likewise, the rise of GLP-1s will shape diabetes treatment. “In diabetes, we see growth of GLP-1s driven by a shift in medical guidelines, including those proposed by the American Diabetes Association and European Association for the Study of Diabetes, which place weight management and assessment of co-morbidities profile on par with glycaemic control,” Vosser added. 

What this means for … biotech

With the GLP-1 market proving to be highly lucrative, new biotech firms will seek to enter the drug race. “Naturally, with a class so potentially unprecedentedly large, we expect many biotechs across the market cap range to be motivated to participate. Even capturing a small share of such a large market could be very interesting for some companies, and these efforts may also lead to attractive partnering opportunities,” said Jessica Fye, a Senior Analyst covering the Large-Cap Biotechnology sector at J.P. Morgan. 

There is also scope for biotech firms to explore, through clinical trials, how certain medications work in tandem with GLP-1s. “For example, we believe companies investigating drugs targeting certain cardiovascular indications may want to consider planning to generate data that includes patients on GLP-1s,” said Anupam Rama, a Senior Analyst covering the U.S. Biotechnology sector at J.P. Morgan. “All in all, we see GLP-1s as an exciting category, with biotechs angling for a slice of the pie.” 

What this means for … medtech

How will GLP-1s impact other technologies used to treat diabetes and obesity? Despite the recent fall in medtech share prices, J.P. Morgan Research does not see an imminent threat to devices such as insulin pumps and continuous glucose monitors (CGMs). “In fact, we anticipate CGM utilization could increase as they will be vital to track progress and determine if GLP-1s are actually working,” said Robbie Marcus, a Senior Analyst covering the U.S. Medical Supplies & Devices sector at J.P. Morgan. “Plus, the weight loss benefit from CGMs, while not quite comparable to that of GLP-1s, is nevertheless material, especially considering how much more affordable they are.” 

Weight loss surgery will also continue to be in demand due to its superior and more sustainable clinical outcomes. “Even those patients who opt for drugs will most likely still undergo bariatric surgery down the line due to the low adherence rates and high recurrence of weight gain from GLP-1s,” Marcus noted. 

Overall, the outlook is still positive for the medtech industry. “With medtech now trading at a slight discount to the S&P 500 vs. a 15–25% historical premium, we think a reasonable amount of GLP-1 risk is already priced in,” Marcus said. “While GLP-1s will be a huge drug class, medtech volumes can also increase over time. We think both can live side by side and don’t see them as mutually exclusive.” 

What this means for … insurance

In the U.S., many insurance providers are scaling back on coverage of GLP-1s due to the high costs involved. As of November 2023, a month’s supply of Zepbound is priced around $1,060, while a month’s supply of Wegovy is around $1,350.

However, J.P. Morgan Research expects coverage to eventually improve, especially for obesity treatment. “Coverage for obesity currently far lags that for T2D, and this will likely remain the biggest debate in the class for some time,” Schott noted. “We estimate current coverage at only around 40%, but this will likely reach the 80% range by the end of the decade, driven by a series of outcomes studies that we expect will show broad health benefits from losing weight.”

In the life insurance space, companies that cover mortality risk will benefit the most from GLP-1s to the extent that the treatment of diabetes, obesity and related co-morbidities translates to longer life spans for the insured population. “In financial terms, higher life expectancies would allow life insurers to earn more premium income and higher investment income on reserves, as mortality claims are deferred,” said Jimmy Bhullar, Head of the U.S. Insurance research team at J.P. Morgan. 

On the other hand, GLP-1s could have a negative impact on life insurers that cover longevity risk through products such as structured settlements and pension risk transfer (PRT) plans, or lapse-supported policies such as long-term care and universal life with secondary guarantees (ULSG), where insurer economics deteriorate the longer the policy stays in force. “This is because longer life spans would translate to more benefits paid in the future,” Bhullar noted. 

What this means for … food and beverage

GLP-1s could have a significant impact on food and beverage consumption. The advent of GLP-1 use for appetite suppression has been a key factor in the median larger-cap U.S. food producers underperforming the S&P 500 by nearly 40% year to date. “We have seen a number of trends and possible disruptions come and go in consumer staples over the years, but never one quite like GLP-1s,” said Ken Goldman, Lead Equity Research Analyst for the U.S. Food Producers and Food Retailers sectors at J.P. Morgan. 

Using data from alternative data provider Numerator, J.P. Morgan Research has found that current GLP-1 users purchased around 8% less food — including snacks, soft drinks and high=carb products — for at-home consumption over the last 12 months compared with the average consumer. Food intake could decrease by  -3% in North America by 2030E, though the figure could be higher for packaged foods. While European food companies derive up to 30–40% of their sales in North America, many of them have broad category and regional exposures, mitigating potential headwinds.

“Overall, we think that if GLP-1s start to make a meaningful difference in consumption patterns, grocers will be hurt less than packaged food companies,” Goldman said. “This is especially as they sell a lot of higher-margin fresh food, which could offset much of the impact on the center store and snacking in particular.” 

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Plants can communicate and respond to touch. Does that mean they're intelligent?

Tonya Mosley

"The primary way plants communicate with each other is through a language, so to speak, of chemical gasses," journalist Zoë Schlanger says. Mohd Rasfan/AFP via Getty Images hide caption

"The primary way plants communicate with each other is through a language, so to speak, of chemical gasses," journalist Zoë Schlanger says.

In the 1960s and '70s, a series of questionable experiments claimed to prove that plants could behave like humans, that they had feelings, responded to music and could even take a polygraph test .

Though most of those claims have since been debunked, climate journalist Zoë Schlanger says a new wave of research suggests that plants are indeed "intelligent" in complex ways that challenge our understanding of agency and consciousness.

"Agency is this effect of having ... an active stake in the outcome of your life," Schlanger says. "And when I was looking at plants and speaking to botanists, it became very clear to me that plants have this."

In her new book, The Light Eaters: How the Unseen World of Plant Intelligence Offers a New Understanding of Life on Earth , Schlanger, a staff reporter at The Atlantic, writes about how plants use information from the environment, and from the past, to make "choices" for the future.

Happy Arbor Day! These 20 books will change the way you think about trees

Schlanger notes that some tomato plants, when being eaten by caterpillars, fill their leaves with a chemical that makes them so unappetizing that the caterpillars start eating each other instead. Corn plants have been known to sample the saliva of predator caterpillars — and then use that information to emit a chemical to attract a parasitic wasp that will attack the caterpillar.

Stop overwatering your houseplants, and other things plant experts want you to know

Schlanger acknowledges that our understanding of plants is still developing — as are the definitions of "intelligence" and "consciousness." "Science is there [for] observation and to experiment, but it can't answer questions about this ineffable, squishy concept of intelligence and consciousness," she says.

But, she adds, "part of me feels like it almost doesn't matter, because what we see plants doing — what we now understand they can do — simply brings them into this realm of alert, active processing beings, which is a huge step from how many of us were raised to view them, which is more like ornaments in our world or this decorative backdrop for our our lives."

Interview highlights

On the concept of plant "intelligence"

Intelligence is this thing that's loaded with so much human meaning. It's too muddled up sometimes with academic notions of intelligence. ... Is this even something we want to layer on to plants? And that's something that I hear a lot of plant scientists talk about. They recognize more than anyone that plants are not little humans. They don't want their subjects to be reduced in a way to human tropes or human standards of either of those things.

On the debate over if plants have nervous systems

I was able to go to a lab in Wisconsin where there [were] plants that had ... been engineered to glow, but only to glow when they've been touched. So I used tweezers to pinch a plant on its vein, ... the kind of mid-rib of a leaf. And I got to watch this glowing green signal emanate from the point where I pinch the plant out to the whole rest of the plant. Within two minutes, the whole plant had received a signal of my touch, of my "assault," so to speak, with these tweezers. And research like that is leading people within the plant sciences, but also people who work on neurobiology in people to question whether or not it's time to expand the notion of a nervous system.

On if plants feel pain

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Plants don't have brains — but they sure act smart.

We have nothing at the moment to suggest that plants feel pain, but do they sense being touched, or sense being eaten, and respond with a flurry of defensive chemicals that suggest that they really want to prevent whatever's going on from continuing? Absolutely. So this is where we get into tricky territory. Do we ascribe human concepts like pain ... to a plant, even though it has no brain? And we can't ask it if it feels pain. We have not found pain receptors in a plant. But then again, I mean, the devil's advocate view here is that we only found the mechanoreceptors for pain in humans, like, fairly recently. But we do know plants are receiving inputs all the time. They know when a caterpillar is chewing on them, and they will respond with aggressive defensiveness. They will do wild things to keep that caterpillar from destroying them further.

On how plants communicate with each other

Zoë Schlanger is a staff writer at The Atlantic. Heather Sten/Harper Collins hide caption

Zoë Schlanger is a staff writer at The Atlantic.

The primary way plants communicate with each other is through a language, so to speak, of chemical gasses. ... And there's little pores on plants that are microscopic. And under the microscope, they look like little fish lips. ... And they open to release these gasses. And those gasses contain information. So when a plant is being eaten or knocked over by an animal or hit by wind too hard, it will release an alarm call that other plants in the area can pick up on. And this alarm call can travel pretty long distances, and the plants that receive it will prime their immune systems and their defense systems to be ready for this invasion, for this group of chewing animals before they even arrive. So it's a way of saving themselves, and it makes evolutionary sense. If you're a plant, you don't want to be standing out in a field alone, so to speak. It's not good for reproductive fitness. It's not good for attracting pollinators. It's often in the interest of plants to warn their neighbors of attacks like this.

On plant "memory"

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Orangutan in the wild applied medicinal plant to heal its own injury, biologists say.

There's one concept that I think is very beautiful, called the "memory of winter." And that's this thing where many plants, most of our fruit trees, for example, have to have the "memory," so to speak, of a certain number of days of cold in the winter in order to bloom in the spring. It's not enough that the warm weather comes. They have to get this profound cold period as well, which means to some extent they're counting. They're counting the elapsed days of cold and then the elapsed days of warmth to make sure they're also not necessarily emerging in a freak warm spell in February. This does sometimes happen, of course. We hear stories about farmers losing their crops to freak warm spells. But there is evidence to suggest there's parts of plants physiology that helps them record this information. But much like in people, we don't quite know the substrate of that memory. We can't quite locate where or how it's possibly being recorded.

On not anthropomorphizing plants

What's interesting is that scientists and botany journals will do somersaults to avoid using human language for plants. And I totally get why. But when you go meet them in their labs, they are willing to anthropomorphize the heck out of their study subjects. They'll say things like, "Oh, the plants hate when I do that." Or, "They really like this when I do this or they like this treatment." I once heard a scientist talk about, "We're going to go torture the plant again." So they're perfectly willing to do that in private. And the reason for that is not because they're holding some secret about how plants are actually just little humans. It's that they've already resolved that complexity in their mind. They trust themselves to not be reducing their subjects to human, simplistic human tropes. And that's going to be a task for all of us to somehow come to that place.

It's a real challenge for me. So much of what I was learning while doing research for this book was super intangible. You can't see a plant communicating, you can't watch a plant priming its immune system or manipulating an insect. A lot of these things are happening in invisible ways. ... Now when I go into a park, I feel totally surrounded by little aliens. I know that there is immense plant drama happening all over the place around me.

Sam Briger and Susan Nyakundi produced and edited this interview for broadcast. Bridget Bentz and Molly Seavy-Nesper adapted it for the web.

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Defining Your Brand’s Narrative and Mission

By Scott Bartnick     May 13, 2024    

Globalization has increased every business’s opportunities, but it has also increased their competition. Offering a quality product or service is no longer enough to attract customers, meaning businesses must differentiate themselves from other companies and brands if they want to thrive and succeed, which involves taking steps to define their brand narrative and mission.

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