Cita APA (7th ed.)

Copi, I. M., & Cohen, C. (2005). Logic: Language, deduction and induction (12th ed.). Pearson Education, Inc.

Cita Chicago (17th ed.)

Copi, Irving M., i Carl Cohen. Logic: Language, Deduction and Induction. 12th ed. Jurong, Singapore: Pearson Education, Inc, 2005.

Cita MLA (9th ed.)

Copi, Irving M., i Carl Cohen. Logic: Language, Deduction and Induction. 12th ed. Pearson Education, Inc, 2005.