Copi, I. M., & Cohen, C. (2019). Introduction to Logic (15th.). Routledge.
Chicago Style (17th ed.) CitationCopi, Irving M., and Carl Cohen. Introduction to Logic. 15th. New York: Routledge, 2019.
MLA (9th ed.) CitationCopi, Irving M., and Carl Cohen. Introduction to Logic. 15th. Routledge, 2019.
Warning: These citations may not always be 100% accurate.