Cita APA (7th ed.)

COPI, I. M. (1982). Introduction to logic (6th ed.). Macmillan.

Cita Chicago (17th ed.)

COPI, Irving M. Introduction to Logic. 6th ed. New York: Macmillan, 1982.

Cita MLA (9th ed.)

COPI, Irving M. Introduction to Logic. 6th ed. Macmillan, 1982.