Harvard referencing seems simple until you encounter sources that don't fit the standard Author (Year) Title pattern. These edge cases are exactly where students lose marks — and where a careful understanding of the rules pays dividends.
The Basic Structure (That Most Students Know)
In-text: (Smith, 2021) or Smith (2021) argues... Reference list: Smith, J. (2021) Title of Book. City: Publisher. The problem starts when sources deviate from this template.
Error 1: Multiple Authors
Two authors: cite both in-text (Smith and Jones, 2021). Three or more: use the first author followed by et al. in the in-text citation (Smith et al., 2021) — but list ALL authors in the reference list. Many students write et al. in the reference list, which is incorrect Harvard formatting.
Error 2: No Date Sources
When a source has no publication date (common with websites and organisational reports), use (no date) or (n.d.) in the in-text citation: (Department of Health, no date). In the reference list: Department of Health (no date) Title. Available at: [URL] [Accessed: DD Month YYYY].
Error 3: Edited Book Chapters
This trips up even strong students. Format: Chapter author(s) (Year) 'Chapter title'. In: Editor(s) (ed./eds.) Book Title. City: Publisher, pp. [page range]. Example: Johnson, T. (2020) 'Strategic leadership in practice'. In: Williams, P. (ed.) Contemporary Management Theory. London: Routledge, pp. 45–67.
Error 4: Corporate and Government Reports
Format: Organisation Name (Year) Title of Report. Available at: [URL] [Accessed: DD Month YYYY]. In-text: (McKinsey & Company, 2023). Students often omit the "Accessed" date for online reports, which is required in Harvard style.
Error 5: Secondary Sources ("Cited In")
If you read Smith (2020) who references Brown (1995) — and you cannot access Brown directly — cite as: (Brown, 1995, cited in Smith, 2020). In the reference list, include only the source you actually read (Smith, 2020). Never cite a source you have not read — this is an academic integrity issue.
Error 6: Online Journal Articles with DOIs
Include the DOI as a hyperlinked URL: Available at: https://doi.org/[DOI]. Do NOT write "DOI:" as a label — just include the full URL. The accessed date is not required when a DOI is provided (DOIs are permanent).