APA-referens (7:e uppl.)

Warburton, N. (2006). Philosophy: The classics (3rd ed.). Routledge.

Chicago-referens (17:e uppl.)

Warburton, Nigel. Philosophy: The Classics. 3rd ed. London ; New York: Routledge, 2006.

MLA-referens (8:e uppl.)

Warburton, Nigel. Philosophy: The Classics. 3rd ed. Routledge, 2006.