Cita APA (7th ed.)

Copi, I. M. (2011). Introduction to logic (14th ed.). Pearson.

Cita Chicago (17th ed.)

Copi, Irving M. Introduction to Logic. 14th ed. Singapore: Pearson, 2011.

Cita MLA (9th ed.)

Copi, Irving M. Introduction to Logic. 14th ed. Pearson, 2011.