Start with the principle
What you need to know
An unused reference appears in the reference list but cannot be matched to an in-text citation. Some assignments allow a bibliography of background reading, but a reference list normally contains cited sources.
A practical method
Check it step by step
- 01
Confirm the list type
Check whether your institution requires a reference list, a bibliography or both.
- 02
Match each entry
Search the document for the first author, organisation name or reference number.
- 03
Check hidden locations
Review tables, figures, appendices and footnotes before deciding an entry is unused.
- 04
Resolve the source
Remove accidental extras or add a citation only where the source genuinely supports the writing.
Apply the guidance
Examples
Ali, R. (2022). Research skills for new undergraduates…
No Ali (2022) citation is found anywhere in the text.
Before submission
Final checklist
- List type confirmed
- Tables and appendices checked
- Organisation authors searched
- Alternative spellings checked
- No citation added merely to keep a source
Course, university and publisher requirements vary. Confirm final punctuation, capitalisation and presentation against the guide you have been instructed to use.