APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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