APA aipamena

Copi, I. M. c. (2020). Introduction to Logic (15th.). Routledge.

Chicago Style aipamena

Copi, Irring M; cohen. Introduction to Logic. 15th. New York: Routledge, 2020.

MLA aipamena

Copi, Irring M; cohen. Introduction to Logic. 15th. Routledge, 2020.