APA (7th ed.) Zitazioa

Copi, I. M. A concise introduction to logic. Macmillan Company.

Chicago Style (17th ed.) Zitazioa

Copi, Irving M. A Concise Introduction to Logic. New York: Macmillan Company.

MLA (9th ed.) Zitazioa

Copi, Irving M. A Concise Introduction to Logic. Macmillan Company.