Citation Format Guides

Master 80 combinations of citation styles and source types

Free, comprehensive guides with examples, in-text citations, common mistakes, and FAQs

Whether you're writing a research paper, thesis, or academic article, proper citations are essential. This comprehensive guide covers 8 major citation styles and 10 common source types.

Each guide includes the exact citation format, real-world examples, in-text citation instructions, common mistakes to avoid, and answers to frequently asked questions.

Citation Styles

Source Types

Citation Style × Source Type Matrix

Click any combination to view detailed formatting instructions:

Popular Citation Guides

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What's Included in Each Guide

Citation Format

The exact template and structure you need to follow

Real Examples

Realistic, fully-formatted citation examples

In-Text Citations

How to cite sources within your paper or essay

Common Mistakes

What to avoid with before/after comparisons

FAQs

Answers to commonly asked questions about each format

Related Guides

Links to other relevant citation formats

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Frequently Asked Questions

Which citation style should I use for my paper?

The right citation style depends on your discipline. APA 7th edition is standard in psychology, education, social sciences, and most empirical research. MLA is used in literature, language studies, and humanities. Chicago has two systems — author-date for sciences and notes-bibliography for history and arts. Harvard is widely used in UK universities and business programs. IEEE serves engineering and computer science; Vancouver is for medical and health sciences; AMA is for medical journals. When in doubt, check your assignment guidelines or your journal's submission requirements.

What's the difference between in-text citations and a reference list?

An in-text citation is a brief reference to a source within the body of your text — for example, '(Smith, 2023)' in APA or '(Smith 12)' in MLA. The reference list (or 'Works Cited' in MLA, 'Bibliography' in Chicago) is the full, alphabetized list at the end of your paper containing complete bibliographic information for every source you cited. Every in-text citation must have a corresponding entry in the reference list, and every reference list entry must be cited at least once in-text.

How do I cite a source with no author?

When there's no individual author, cite the organization, government agency, or publishing entity instead. For example, '(World Health Organization, 2024)' in APA or '("Climate Report")' in MLA when even the organization is missing. For websites without an author, use the website name. For governmental documents, the issuing agency. The goal is to give readers enough information to find the source — the entry in your reference list provides full bibliographic details.

Do I need to cite every fact in my paper?

Cite every fact, statistic, idea, or interpretation that comes from a source — even if you paraphrase it in your own words. You do not need to cite 'common knowledge' (facts widely known and not attributable to a specific source, like 'World War II ended in 1945' or 'water boils at 100°C'). When in doubt, cite. Over-citation is a minor formatting issue; failing to cite borrowed ideas is plagiarism.

Can I use a citation generator instead of formatting citations manually?

Yes — citation generators handle the mechanical formatting work and reduce errors. However, always verify the output against an authoritative style guide. Free tools like our Citation Generator catch most common cases (books, journal articles, websites) reliably; complex sources (multi-volume works, government documents, archival material) sometimes need manual adjustment. Treat the generator as a first draft, not a final answer.

How are citation styles updated, and how do I know I'm using the right edition?

Major citation styles update on different schedules. APA released its 7th edition in October 2019 (current as of 2026). MLA published its 9th edition in 2021. Chicago's 17th edition has been current since 2017. IEEE updates roughly every 4 years. Always check the latest edition guide directly from the publishing organization. If you're submitting to a journal or thesis committee, follow whatever edition they specify, even if a newer one exists.