Cita APA (7a ed.)

Copi, I. M. (1961). Introductión to logic (2. ed.). Macmillan Company.

Cita Chicago Style (17a ed.)

Copi, Irving M. Introductión to Logic. 2. ed. New York: Macmillan Company, 1961.

Cita MLA (8a ed.)

Copi, Irving M. Introductión to Logic. 2. ed. Macmillan Company, 1961.