APA (7th ed.) Citation

Copi, I. M., & Cohen, C. (1990). Introduction to logic (8th ed.). Macmillan Publishing Company.

Chicago Style (17th ed.) Citation

Copi, Irving M., and Carl Cohen. Introduction to Logic. 8th ed. New York: Macmillan Publishing Company, 1990.

MLA (9th ed.) Citation

Copi, Irving M., and Carl Cohen. Introduction to Logic. 8th ed. Macmillan Publishing Company, 1990.