what is a bibliography in a research paper

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Bibliography: Definition and Examples

Glossary of Grammatical and Rhetorical Terms

• An Introduction to Punctuation
• Ph.D., Rhetoric and English, University of Georgia
• M.A., Modern English and American Literature, University of Leicester
• B.A., English, State University of New York

A bibliography is a list of works (such as books and articles) written on a particular subject or by a particular author. Adjective : bibliographic.

Also known as a list of works cited , a bibliography may appear at the end of a book, report, online presentation, or research paper. Students are taught that a bibliography, along with correctly formatted in-text citations, is crucial to properly citing one's research and avoiding accusations of plagiarism. In formal research, all sources used, whether quoted directly or synopsized, should be included in the bibliography.

An annotated bibliography includes a brief descriptive and evaluative paragraph (the annotation ) for each item in the list. These annotations often give more context about why a certain source may be useful or related to the topic at hand.

• Etymology:  From the Greek, "writing about books" ( biblio , "book", graph , "to write")
• Pronunciation:  bib-lee-OG-rah-fee

Examples and Observations

"Basic bibliographic information includes title, author or editor, publisher, and the year the current edition was published or copyrighted . Home librarians often like to keep track of when and where they acquired a book, the price, and a personal annotation, which would include their opinions of the book or of the person who gave it to them" (Patricia Jean Wagner, The Bloomsbury Review Booklover's Guide . Owaissa Communications, 1996)

Conventions for Documenting Sources

"It is standard practice in scholarly writing to include at the end of books or chapters and at the end of articles a list of the sources that the writer consulted or cited. Those lists, or bibliographies, often include sources that you will also want to consult. . . . "Established conventions for documenting sources vary from one academic discipline to another. The Modern Language Association (MLA) style of documentation is preferred in literature and languages. For papers in the social sciences the American Psychological Association (APA) style is preferred, whereas papers in history, philosophy, economics, political science, and business disciplines are formatted in the Chicago Manual of Style (CMS) system. The Council of Biology Editors (CBE) recommends varying documentation styles for different natural sciences." (Robert DiYanni and Pat C. Hoy II, The Scribner Handbook for Writers , 3rd ed. Allyn and Bacon, 2001)

APA vs MLA Style Bibliographies

There are several different styles of citations and bibliographies that you might encounter: MLA, APA, Chicago, Harvard, and more. As described above, each of those bibliography styles is often associated with a particular segment of academia and research. Of these, the most widely used are APA and MLA styles. They both include similar information but are arranged and formatted differently.

"In an entry for a book in an APA-style works-cited list, the date (in parentheses) immediately follows the name of the author (whose first name is written only as an initial), just the first word of the title is capitalized, and the publisher's full name is generally provided.

APA Anderson, I. (2007). This is our music: Free jazz, the sixties, and American culture . Philadelphia: University of Pennsylvania Press.

By contrast, in an MLA-style entry, the author's name appears as given in the work (normally in full), every important word of the title is capitalized, some words in the publisher's name are abbreviated, the publication date follows the publisher's name, and the medium of publication is recorded. . . . In both styles, the first line of the entry is flush with the left margin, and the second and subsequent lines are indented.

MLA Anderson, Iain. This Is Our Music: Free Jazz, the Sixties, and American Culture . Philadelphia: U of Pennsylvania P, 2007. Print. The Arts and Intellectual Life in Mod. Amer.

( MLA Handbook for Writers of Research Papers , 7th ed. The Modern Language Association of America, 2009)

Finding Bibliographic Information for Online Sources

"For Web sources, some bibliographic information may not be available, but spend time looking for it before assuming that it doesn't exist. When information isn't available on the home page, you may have to drill into the site, following links to interior pages. Look especially for the author's name, the date of publication (or latest update), and the name of any sponsoring organization. Do not omit such information unless it is genuinely unavailable. . . . "Online articles and books sometimes include a DOI (digital object identifier). APA uses the DOI, when available, in place of a URL in reference list entries." (Diana Hacker and Nancy Sommers, A Writer's Reference With Strategies for Online Learners , 7th ed. Bedford/St. Martin's, 2011)

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How to Write a Bibliography in APA Format

Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."

Emily is a board-certified science editor who has worked with top digital publishing brands like Voices for Biodiversity, Study.com, GoodTherapy, Vox, and Verywell.

• APA Bibliography
• How to Create One
• Why You Need It

Sample Bibliography

An APA format bibliography lists all of the sources that might be used in a paper. A bibliography can be a great tool to help you keep track of information during the research and writing process. In some cases, your instructor may require you to include a bibliography as part of your assignment.

At a Glance

A well-written APA format bibliography can help you keep track of information and sources as you research and write your psychology paper. To create a bibliography, gather up all of the sources that you might use in your paper. Create an APA format reference for each source and then write a brief annotation. Your annotation should be a brief summary of what each reference is about. You can quickly refer to these annotations When writing your paper and determine which to include.

What Is an APA Format Bibliography?

An APA format bibliography is an alphabetical listing of all sources that might be used to write an academic paper, essay, article, or research paper—particularly work that is covering psychology or psychology-related topics. APA format is the official style of the American Psychological Association (APA). This format is used by many psychology professors, students, and researchers.

Even if it is not a required part of your assignment, writing a bibliography can help you keep track of your sources and make it much easier to create your final reference page in proper APA format.

Creating an APA Bibliography

A bibliography is similar in many ways to a reference section , but there are some important differences. While a reference section includes every source that was actually used in your paper, a bibliography may include sources that you considered using but may have dismissed because they were irrelevant or outdated.

Bibliographies can be a great way to keep track of information you might want to use in your paper and to organize the information that you find in different sources. The following are four steps you can follow to create your APA format bibliography.

Start on a New Page

Your working bibliography should be kept separate from the rest of your paper. Start it on a new page, with the title "Bibliography" centered at the top and in bold text. Some people use the title "References" instead, so it's best to check with your professor or instructor about which they prefer you to use.

Gather Your Sources

Compile all the sources you might possibly use in your paper. While you might not use all of these sources in your paper, having a complete list will make it easier later on when you prepare your reference section.

Gathering your sources can be particularly helpful when outlining and writing your paper.

By quickly glancing through your working bibliography, you will be able to get a better idea of which sources will be the most appropriate to support your thesis and main points.

Reference Each Source

Your references should be listed alphabetically by the author’s last name, and they should be double-spaced. The first line of each reference should be flush left, while each additional line of a single reference should be a few spaces to the right of the left margin, which is known as a hanging indent.

The format of each source is as follows for academic journals:

• Last name of first author (followed by their first initial)
• The year the source was published in parentheses
• The title of the source
• The journal that published the source (in italics)
• The volume number, if applicable (in italics)
• The issue number, if applicable
• Page numbers (in parentheses)
• The URL or "doi" in lowercase letters followed by a colon and the doi number, if applicable

The following examples are scholarly articles in academic journals, cited in APA format:

• Kulacaoglu, F., & Kose, S. (2018). Borderline personality disorder (BPD): In the midst of vulnerability, chaos, and awe.  Brain sciences ,  8 (11), 201. doi:10.3390/brainsci8110201
• Cattane, N., Rossi, R., & Lanfredi, M. (2017). Borderline personality disorder and childhood trauma: exploring the affected biological systems and mechanisms.  BMC Psychiatry,   18 (221). doi:10.1186/s12888-017-1383-2

Visit the American Psychological Association's website for more information on citing other types of sources including online media, audiovisual media, and more.

Create an Annotation for Each Source

Normally a bibliography contains only references' information, but in some cases you might decide to create an annotated bibliography. An annotation is a summary or evaluation of the source.

An annotation is a brief description of approximately 150 words describing the information in the source, your evaluation of its credibility, and how it pertains to your topic. Writing one of these for each piece of research will make your writing process faster and easier.

This step helpful in determining which sources to ultimately use in your paper. Your instructor may also require it as part of the assignment so they can assess your thought process and understanding of your topic.

Reasons to Write a Bibliography

One of the biggest reasons to create an APA format bibliography is simply to make the research and writing process easier.

If you do not have a comprehensive list of all of your references, you might find yourself scrambling to figure out where you found certain bits of information that you included in your paper.

A bibliography is also an important tool that your readers can use to access your sources.

While writing an annotated bibliography might not be required for your assignment, it can be a very useful step. The process of writing an annotation helps you learn more about your topic, develop a deeper understanding of the subject, and become better at evaluating various sources of information.

The following is an example of an APA format bibliography by the website EasyBib:

There are many online resources that demonstrate different formats of bibliographies, including the American Psychological Association website . Purdue University's Online Writing Lab also has examples of formatting an APA format bibliography.

Check out this video on their YouTube channel which provides detailed instructions on formatting an APA style bibliography in Microsoft Word.

You can check out the Purdue site for more information on writing an annotated APA bibliography as well.

What This Means For You

If you are taking a psychology class, you may be asked to create a bibliography as part of the research paper writing process. Even if your instructor does not expressly require a bibliography, creating one can be a helpful way to help structure your research and make the writing process more manageable.

For psychology majors , it can be helpful to save any bibliographies you have written throughout your studies so that you can refer back to them later when studying for exams or writing papers for other psychology courses.

American Psychological Association. Publication Manual of the American Psychological Association . 7th Edition. Washington, DC: American Psychological Association; 2020.

Masic I. The importance of proper citation of references in biomedical articles.   Acta Inform Med . 2013;21(3):148–155. doi:10.5455/aim.2013.21.148-155

American Psychological Association. How do you format a bibliography in APA Style?

Cornell University Library. How to prepare an annotated bibliography: The annotated bibliography .

By Kendra Cherry, MSEd Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."