Warburton, N. (2006). Philosophy: The classics (3rd ed.). Routledge.
Cita Chicago (17th ed.)Warburton, Nigel. Philosophy: The Classics. 3rd ed. London ; New York: Routledge, 2006.
Cita MLA (8th ed.)Warburton, Nigel. Philosophy: The Classics. 3rd ed. Routledge, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.