From a book:

Bibliography:

Downie, L. (2006) Claude Cahun & Marcel Moore dont kiss me, London: Tate Publishing

Use a quote

Own text ……… where it says; ‘Under the pseudonym ‘Claude Cahun’ (Kristine Von Oehsen 2006:18).

From an online source:

Bibliography:

O’Hagan, S. (16 May 2014)

Title: Life, Time…..

London: The Guardian

URL/address ……….. 03.12.19

Quote from text ‘………’ (O’Hagen 2014 or URL address).