APA-referens (7:e uppl.)

Copi, I. M. (1986). Introduction to logic: Introduction to logic (7th ed.). Macmillan.

Chicago-referens (17:e uppl.)

Copi, Irving M. Introduction to Logic: Introduction to Logic. 7th ed. New York: Macmillan, 1986.

MLA-referens (9:e uppl.)

Copi, Irving M. Introduction to Logic: Introduction to Logic. 7th ed. Macmillan, 1986.