APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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