APA (7th ed.) Citation

Urmson, J. O. (1989). The concise encyclopedia of western philosophy and philosophers (New ed., completely rev.). Unwin Hyman.

Chicago Style (17th ed.) Citation

Urmson, J. O. The Concise Encyclopedia of Western Philosophy and Philosophers. New ed., completely rev. London: Unwin Hyman, 1989.

MLA (9th ed.) Citation

Urmson, J. O. The Concise Encyclopedia of Western Philosophy and Philosophers. New ed., completely rev. Unwin Hyman, 1989.