Last updated: March 2026
Bibliography vs Works Cited vs References
The terms bibliography, Works Cited, and References are often used interchangeably, but they have specific meanings depending on the citation style you are using. Understanding these differences helps you create the correct end-of-paper source list for your assignment.
References (APA) lists only the sources directly cited in your paper. Every in-text citation must have a corresponding entry in the References, and every References entry must be cited in the text.
Works Cited (MLA) serves the same purpose as APA’s References — it lists only the works you actually cited. MLA does not use the term “bibliography” for this purpose.
Bibliography (Chicago) can include both cited sources and sources consulted but not directly cited. This broader scope gives readers additional resources for further reading.
Frequently Asked Questions
What is the difference between a bibliography and a Works Cited page?
A Works Cited page (used in MLA) lists only sources you directly cited in your paper. A bibliography may include sources you consulted for background research but did not directly cite. APA uses 'References' (cited sources only), while Chicago may use either 'Bibliography' (all sources) or 'References' (cited sources only).
How should I organize my bibliography?
Bibliographies are almost always organized alphabetically by the author's last name. If a source has no author, alphabetize by the first significant word of the title (ignoring articles like 'A', 'An', 'The'). Multiple works by the same author are arranged chronologically, oldest first.
How many sources should a bibliography have?
The number depends on the assignment. A typical undergraduate essay might have 5-15 sources. A research paper might have 20-50. A thesis could have 100+. Quality matters more than quantity — use credible, relevant, and recent sources that directly support your arguments.
What is a hanging indent and why does a bibliography use it?
A hanging indent means the first line of each entry is flush with the left margin, and all subsequent lines are indented (usually 0.5 inches). This format makes it easy to scan down the left edge of the page and find entries by author name. All major citation styles require hanging indents in the bibliography.
Can I mix citation styles in one bibliography?
No. You should use one consistent citation style throughout your entire paper and bibliography. Mixing APA and MLA formatting, for example, is considered an error. Choose the style required by your instructor, journal, or publisher and apply it consistently to every source.
How do I create an annotated bibliography?
An annotated bibliography adds a brief summary and evaluation (100-200 words) after each citation. Create your formatted citations using our tool, then add a paragraph beneath each entry that summarizes the source, evaluates its credibility, and explains how it relates to your research topic.