I am citing a quote but the person who said the quote didn’t write the book?
Answer
This is called secondary referencing. You need to have both the person who said the quote and the author of the text in your citation.
If you wanted to use this quote in your own writing, then your citation would be like this:
(Williamson, 1986:14 cited in Gill, 2007:16)
You use the citation details of the original quote but then use the words “cited in” to indicate the source you got it from. In this instance, the only book you would need to enter in your bibliography would be the one written by Rosalind Gill.
For more information look at Harvard Referencing and go to the section on ‘Citing an author quoting someone else’ (under the 'Citation' tab).