Works Cited vs. Bibliography vs. References: What to Call Your Source List

By MLA Generator Editorial Team · Published April 29, 2026

“Works Cited,” “References,” and “Bibliography” are not interchangeable. The three labels mean different things in different styles, and using the wrong heading on an academic paper is one of those small errors a marker registers immediately. The distinctions are not arbitrary — each label carries a rule about what belongs in that section — and once the rules are clear, the right choice for any given assignment is obvious. This guide covers what each name actually means, what goes in each section, and which heading your style requires.

The shortest answer: “Works Cited” (MLA) and “References” (everyone else except Chicago notes–bibliography) include only sources cited in the body. “Bibliography” (Chicago notes–bibliography) may include both cited and consulted sources. Match the heading to the style and to what the section actually contains.

The three labels and what they actually mean

Each label describes a slightly different relationship between the source list and the paper.

Works Cited is MLA’s term for the reference list at the back of a paper. The name is literal: works that were cited. If a source is in the body — quoted, paraphrased, summarized, or referenced — it appears here. If a source was read but not cited, it does not appear. The one-to-one match between in-text citations and Works Cited entries is what MLA assignments grade against most directly.

References is the term used by APA, Harvard (Cite Them Right), Chicago author–date, Vancouver, IEEE, and AMA. It functions identically to MLA’s Works Cited — only sources that appear in the body appear in the References list. The label is a stylistic choice; the rule is the same.

Bibliography is older and broader. In its traditional sense — and in Chicago’s notes–bibliography system, which preserves the traditional usage — a Bibliography lists works cited and consulted. A history paper using Chicago footnotes can include in its Bibliography both the sources that appear in the footnotes and additional sources that informed the writer’s understanding of the period but were not directly quoted. This is the meaningful difference between “Bibliography” and “References” — when the heading says Bibliography, the writer is permitted to include relevant uncited works.

Outside Chicago notes–bibliography, the word “Bibliography” sometimes appears informally on student papers in styles where it does not belong. If your assignment uses APA, MLA, or any of the numeric styles, “Bibliography” is the wrong heading.

What goes in each section

The rule is simpler than the label suggests.

A Works Cited or References section lists every source cited in the body of the paper, and nothing else. Every in-text citation must point to an entry in the list. Every entry in the list must be cited at least once in the body. The two lists are matched: if Goldstein et al. (2024) appears in the parenthetical, the full Goldstein et al. entry appears in the References. If Goldstein et al. does not appear in the body, removing it from the References is not optional — it is required.

A Bibliography (in Chicago notes–bibliography) lists every source cited in the footnotes, plus every source the writer consulted in researching the paper. The “consulted” sources are works the writer read for background, methodology, or context but did not directly cite. The Bibliography is therefore longer than the footnote list. A reader can use the Bibliography as a starting point for further research, which is part of why Chicago preserved the convention.

Selected bibliographies are a narrower thing — a curated subset, often appended to a book chapter or a lecture handout, pointing the reader to the most representative works on a topic. A selected bibliography is not the back-of-paper reference list; it is editorial commentary in list form, and it does not replace Works Cited or References in academic coursework.

Style-by-style mapping

Each row shows the required heading and what is permitted in that section.

The two cases worth noting: Chicago is the only style that can legitimately use either “References” or “Bibliography” depending on which Chicago system you are running, and the choice carries real meaning about what the section contains. Harvard’s Cite Them Right uses “Reference list” rather than “References” — a small distinction worth getting right because graders who know the style notice.

The Chicago notes–bibliography case (the odd one)

Chicago notes–bibliography is the only major style that distinguishes cited and consulted sources at the bibliography level. The rationale is historical: footnotes in humanities writing have always carried discursive material — short asides, qualifications, brief discussions of secondary sources — alongside straightforward citations. A Bibliography that listed only the works named in footnotes would understate the writer’s engagement with the field. The Bibliography therefore includes both cited and consulted sources.

In practice, “consulted” has a real test: would the reader of your paper, given access to your Bibliography, be able to roughly retrace the reading you did? A source you skimmed for ten minutes but did not use does not belong. A source you read carefully for background and methodology, even without directly citing it, does. The distinction is judgment-based, and graders generally trust the writer to draw the line honestly.

Chicago author–date uses “References” and follows the same rule as APA and MLA — only cited sources. Mixing the two Chicago systems within one paper is not permitted; the choice between notes–bibliography and author–date is made before the paper begins.

Common mistakes

Using “Bibliography” as the heading on an APA or MLA paper. The most common error in this whole category. APA papers use “References”; MLA papers use “Works Cited.” Using “Bibliography” on either is a recognizable submission error.

Including uncited sources in a Works Cited or References list. A source that was read but never cited in the body does not belong in the back. If the source informed your thinking and you want to credit it, find a place in the body to cite it; if you cannot, leave it out.

Failing to match the in-text citations to the entries one-to-one. Every in-text citation needs a matching entry; every entry needs at least one in-text citation. A spot-check before submission — run a column of in-text citations down one side and the References down the other — catches mismatches in under a minute.

Choosing the wrong Chicago system mid-paper. Chicago notes–bibliography and Chicago author–date are not interchangeable. The choice between them is determined before you start writing, by your discipline and your assignment, and switching mid-paper produces inconsistent in-text citations and a Bibliography heading that does not match the body.

Listing entries in the wrong order. Author–date styles alphabetize the reference list by first author’s surname; numeric styles (Vancouver, IEEE, AMA) list in citation order, starting with whatever source was cited first as entry [1]. Alphabetizing a numeric reference list, or numbering an alphabetical one, breaks the relationship between in-text citation and reference list entry that the format depends on.

Editorial methodology and sources