Cita APA (7th ed.)

COPI, I. M. (1968). Introduction to logic (3rd. ed.). Macmillan.

Cita Chicago (17th ed.)

COPI, Irving M. Introduction to Logic. 3rd. ed. London: Macmillan, 1968.

Cita MLA (9th ed.)

COPI, Irving M. Introduction to Logic. 3rd. ed. Macmillan, 1968.