Παραπομπή APA

Salmon, M. (2002). Introduction to logic and critical thinking (4th ed.). Thomson Learning . Wadsworth.

Παραπομπή Chicago Style

Salmon, Merrilee. Introduction to Logic and Critical Thinking. 4th ed. United States: Thomson Learning . Wadsworth, 2002.

Παραπομπή MLA

Salmon, Merrilee. Introduction to Logic and Critical Thinking. 4th ed. Thomson Learning . Wadsworth, 2002.