Copi, I. M., & Cohen, C. (1990). Introduction to logic (8th ed.). Macmillan.
Chicago Style (17th ed.) CitationCopi, Irving M., and Carl Cohen. Introduction to Logic. 8th ed. New York: Macmillan, 1990.
MLA (9th ed.) CitationCopi, Irving M., and Carl Cohen. Introduction to Logic. 8th ed. Macmillan, 1990.
Warning: These citations may not always be 100% accurate.