Cita APA (7a ed.)

Copi, I. (1979). Symbolic logic (5.). McMillan.

Cita Chicago Style (17a ed.)

Copi, Irving. Symbolic Logic. 5. New York, Estados Unidos: McMillan, 1979.

Cita MLA (9a ed.)

Copi, Irving. Symbolic Logic. 5. McMillan, 1979.