What Is a Citation?
A citation is a structured pointer to a source: enough information — author, title, date, where it lives — for a reader to find exactly what you used. Academic writing runs on them: every claim borrowed from someone else carries a citation, and the paper ends with the full list.
What citations are for
- Credit — the people whose work you built on get acknowledged.
- Verifiability — readers can check your evidence and judge it themselves.
- The research trail — citations are how scholarship connects; following them backward is how you find the foundational work.
- Your protection — borrowed material without a citation is plagiarism, even when unintentional.
The two parts of every citation
The in-text citation — a short marker at the point of use: (Rasch & Born, 2013) in APA, (Rasch and Born 685) in MLA, [1] in IEEE, a footnote in Chicago.
The reference entry — the full record in the list at the end:
Rasch, B., & Born, J. (2013). About sleep's role in memory. Physiological Reviews, 93(2), 681-766. https://doi.org/10.1152/physrev.00032.2012
The same source in different styles
Styles are dialects of the same language — identical facts, different arrangement:
Martin, R. C. (2008). Clean Code: A Handbook of Agile Software Craftsmanship. Prentice Hall.
Martin, Robert C. Clean Code: A Handbook of Agile Software Craftsmanship. Prentice Hall, 2008.
Martin, Robert C. Clean Code: A Handbook of Agile Software Craftsmanship. Prentice Hall, 2008.
Citation, reference, footnote — the vocabulary
Citation is the umbrella term for both parts. Reference usually means the full entry (APA's list is titled References). Works Cited is MLA's name for the same list. Bibliography is broader — everything consulted, cited or not. Footnotes/endnotes are Chicago's in-text mechanism. The distinctions matter mostly when an assignment names one — see References vs Bibliography.
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Go Premium — $5/monthFrequently asked questions
- What's the difference between a citation and a reference?
- In careful usage, the citation is the short in-text marker and the reference is the full entry in the end list. Colloquially 'citation' covers both.
- Do I need citations for common knowledge?
- No — widely known, uncontested facts (water boils at 100°C at sea level) need no source. The test: would a general reader ask "says who?" If yes, cite.
- What happens if I don't cite?
- Uncited borrowed material is plagiarism — an academic integrity violation with consequences from a failing grade to expulsion, regardless of intent. Citing is cheap insurance.
- What's the easiest way to make a citation?
- Paste the source's URL, DOI, or ISBN into our free generator — the full citation comes back in all five major styles, ready to copy.