APA (7th ed.) Citation

(2005). The Penguin dictionary of philosophy (2. ed.). Penguin Books.

Chicago Style (17th ed.) Citation

The Penguin Dictionary of Philosophy. 2. ed. London [u.a.]: Penguin Books, 2005.

MLA (9th ed.) Citation

The Penguin Dictionary of Philosophy. 2. ed. Penguin Books, 2005.