Citing sources correctly is fundamental to academic writing — it credits other people's ideas, lets readers find your sources, and protects you from plagiarism. Yet citation confuses many students. This complete UK guide explains what citing means, the difference between citations and references, how in-text citations work across the major styles, when to cite, and how to avoid common errors.
What Does Citing Mean?
Citing means acknowledging the source of any idea, fact, quote or data that is not your own. It has two parts: a brief in-text citation at the point you use the source, and a full reference in the list at the end.
Citation vs Reference
A citation is the short pointer in your text (e.g. an author-date or a number). A reference is the full bibliographic entry. Every in-text citation must have a matching reference, and vice versa.
How In-Text Citations Work by Style
✓ Harvard / APA: author and year, e.g. (Smith, 2020).
✓ MLA: author and page, e.g. (Smith 42).
✓ Vancouver / IEEE: a number, e.g. [1].
✓ OSCOLA: a footnote.
When to Cite
Cite whenever you quote, paraphrase, summarise or use data or ideas from a source. You do not need to cite common knowledge or your own original analysis. When in doubt, cite — under-citing risks plagiarism.
Quoting vs Paraphrasing
Direct quotes use the exact words in quotation marks with a citation; paraphrases restate the idea in your own words, still cited. See our paraphrasing guide.
Common Mistakes and Tips
✓ In-text citations with no matching reference.
✓ Mixing citation styles.
✓ Forgetting to cite paraphrases.
✓ Citing common knowledge unnecessarily. Tip: pick one style, cite consistently, and use a reference manager.
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Frequently Asked Questions
What does it mean to cite a source?
To acknowledge where an idea, fact, quote or data came from, in text and in the reference list.
What is the difference between a citation and a reference?
A citation is the short in-text pointer; a reference is the full bibliographic entry.
When should I cite a source?
Whenever you quote, paraphrase, summarise or use data or ideas that are not your own.
Do I need to cite common knowledge?
No — widely known facts do not need a citation.
Do I cite paraphrases?
Yes — the idea still belongs to the original author.
How do in-text citations differ by style?
Harvard and APA use author-date, MLA author-page, Vancouver and IEEE use numbers, OSCOLA uses footnotes.
What happens if I don't cite?
You risk plagiarism, which carries serious academic penalties.
Should I use a reference manager?
Yes — it keeps citations and references consistent and matched.
Related Study Guides
Harvard Referencing Guide • How to Reference in APA 7 • How to Paraphrase • How to Avoid Plagiarism
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