APA (7th ed.) Citation

Popkin, R. H., & Stroll, A. (1993). Philosophy made simple (2nd ed., rev.). Doubleday.

Chicago Style (17th ed.) Citation

Popkin, Richard H., and Avrum Stroll. Philosophy Made Simple. 2nd ed., rev. New York: Doubleday, 1993.

MLA (9th ed.) Citation

Popkin, Richard H., and Avrum Stroll. Philosophy Made Simple. 2nd ed., rev. Doubleday, 1993.