Cita APA (7th ed.)

Copi, I. M. (1978). Introduction to logic (5th ed.). Collier Macmillan.

Cita Chicago (17th ed.)

Copi, Irving M. Introduction to Logic. 5th ed. New York: Macmillan ; London: Collier Macmillan, 1978.

Cita MLA (9th ed.)

Copi, Irving M. Introduction to Logic. 5th ed. Collier Macmillan, 1978.