Reference List vs Bibliography: What's the Difference?

The terms "reference list," "bibliography," and "works cited" are often used interchangeably, but they have distinct meanings in academic writing. The key distinction is scope: a reference list includes only sources you cited in your paper, while a bibliography can include sources you consulted but did not directly cite. Choosing the wrong term can signal to your instructor that you are unfamiliar with the conventions of your field.

The term you should use depends entirely on which citation style your paper follows. APA uses "References," MLA uses "Works Cited," and Chicago offers both "Bibliography" and "Reference List" depending on which citation system you are using (Notes-Bibliography or Author-Date). Using the wrong heading is a formatting error that is easy to avoid once you know the rules.

A reference list appears at the end of your paper and includes only the sources you have cited in the text. Every entry in the reference list must correspond to an in-text citation, and every in-text citation must have a matching entry. This one-to-one relationship is a strict rule in APA and Vancouver styles.

APA calls this section "References" (not "Reference List" or "Bibliography"). It is alphabetised by the first author's last name, with hanging indentation (the first line is flush left, subsequent lines are indented). Vancouver numbers the entries in the order they first appear in the text rather than alphabetising them.

References

Smith, J. A. (2023). Title of the article. Journal Name, 45(2), 112–130. https://doi.org/10.1234/example

Walker, M. (2017). Why we sleep. Scribner.

MLA uses the heading "Works Cited" for the list of sources at the end of a paper. Like APA's reference list, the Works Cited page includes only sources that are directly cited in the text. The difference is purely terminological and stylistic — the underlying principle is the same: every in-text citation must match an entry, and vice versa.

If your MLA paper needs to include background sources you consulted but did not cite, MLA allows a separate "Works Consulted" page. However, this is rare in practice and is only used when an instructor specifically requests it. For most MLA assignments, "Works Cited" is all you need.

Works Cited

Smith, John A. "Title of the Article." Journal Name, vol. 45, no. 2, 2023, pp. 112–130.

Walker, Matthew. Why We Sleep. Scribner, 2017.

In Chicago Notes-Bibliography style, the "Bibliography" at the end of your paper can include both sources you cited and sources you consulted during your research. This broader scope is what distinguishes a bibliography from a reference list. However, in practice, most instructors expect you to include only cited sources unless the assignment says otherwise.

Chicago Author-Date style, on the other hand, uses the heading "References" or "Reference List" — just like APA — and includes only cited sources. This is one of the reasons it is important to know which Chicago system your assignment requires: Notes-Bibliography and Author-Date have different conventions for the end-of-paper list.

• APA — "References" (only cited sources)
• MLA — "Works Cited" (only cited sources)
• Chicago Notes-Bibliography — "Bibliography" (cited + optionally consulted sources)
• Chicago Author-Date — "References" (only cited sources)
• Harvard — "Reference List" (only cited sources)
• Vancouver — "References" (numbered in order of appearance, only cited sources)
• IEEE — "References" (numbered in order of appearance, only cited sources)
• ABNT — "Referências" (only cited sources)

The bottom line: unless you are using Chicago Notes-Bibliography and your instructor explicitly asks for consulted sources, your end-of-paper list should include only the sources you actually cited in the body of your paper. Every entry needs a corresponding in-text citation, and every in-text citation needs an entry in the list.