Warburton, N. (2013). Philosophy: The basics (5th ed.). Routledge.
Cita Chicago (17th ed.)Warburton, Nigel. Philosophy: The Basics. 5th ed. London ; New York: Routledge, 2013.
Cita MLA (8th ed.)Warburton, Nigel. Philosophy: The Basics. 5th ed. Routledge, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.