Παραπομπή APA

Gensler, H. J. (2002). Introduction to logic. Routledge.

Παραπομπή Chicago Style

Gensler, Harry J. Introduction to Logic. London ; New York: Routledge, 2002.

Παραπομπή MLA

Gensler, Harry J. Introduction to Logic. Routledge, 2002.