The Footnote / Bibliography or 'Oxford' Referencing System

Second and subsequent references to the same source don’t need to be as detailed as the first note—they just need the minimum information to clearly indicate which text is being referred to.

With a single author

Provide all the necessary information in the first footnote. If you want to refer to the same source again, a simple method is to give the author’s name, the year of publication and the page number. For example:

¹ K Reid, Higher Education or Education for Hire? Language and Values in Australian Universities, CQU Press, Rockhampton, 1996, p. 87.

²...

³ Reid, p. 98. 

If two or more works by the same author are referred to in the text, include the title:

¹ E Gaskell, North and South, Penguin, Harmondsworth, 1970, p. 228.

² E Gaskell, The Life of Charlotte Brontë, Penguin, Harmondsworth, 1975, p. 53.

³ Gaskell, North and South, p. 222. 

Subsequent references to articles are done in a similar way: 

¹⁷ M Doyle, ‘Captain Mbaye Diagne’, Granta, vol. 48, August 1994, pp. 99-103.

¹⁸ ...

¹⁹ Doyle, Granta, p. 101.

Another way to shorten second or subsequent references is with Latin abbreviations. For example:

ibid = same as last entry

Use ibid when two references in a row are from the same source. 

op. cit.= as previously cited

Use op. cit. when you have already given full details of that source in an earlier note. When using op. cit. you still need to provide information such as the author’s name to make the source clear. These abbreviations should be in lowercase, even when they appear at the beginning of a note. For further information, see p. 214- 5 of the Style Manual.

Examples

¹¹ K Reid, Higher Education or Education for Hire? Language and Values in Australian Universities, CQU Press, Rockhampton, 1996, p. 87.

¹² ibid., p. 26.

¹³ M Doyle, ‘Captain Mbaye Diagne’, Granta, vol. 48, August 1994, p. 99.

¹⁴ Reid, op. cit., p. 147.