If you have a useful source text, you may need to cite it more than once in your work. And the Chicago Manual of Style has specific rules for doing this! Here, then, is our guide to repeat citations in Chicago style referencing.
Footnote Citations
In Chicago footnote referencing, after giving full source information in the first footnote, you can shorten subsequent citations of the same source to prevent repetition. These shortened footnotes should include the author’s surname, a shortened title, and the page(s) cited:
1. Alan C. Jenkins, Wildlife in the City: Animals, Birds, Reptiles, Insects and Plants in an Urban Landscape (London: Holt & Company, 1983), 13.
2. Esther Woolfson, Corvus: A Life with Birds (London: Granta Publications, 2008), 234.
3. Jenkins, Wildlife in the City, 102.
If citing two people with the same surname in your work, make sure to include the initial of the person you are citing again as well as their surname.
When citing the same source repeatedly, you can shorten the citation even further to just the author’s name and a page number:
