APA (7th ed.) Citation

Copi, I. M., & Cohen, C. (1990). Introduction to logic. Macmillan.

Chicago Style (17th ed.) Citation

Copi, Irving M., and Carl Cohen. Introduction to Logic. New York: Macmillan, 1990.

MLA (9th ed.) Citation

Copi, Irving M., and Carl Cohen. Introduction to Logic. Macmillan, 1990.