APA استشهاد

Gensler, H. J. (2010). Introduction to logic (2nd ed.). Routledge.

استشهاد بنمط شيكاغو

Gensler, Harry J. Introduction to Logic. 2nd ed. New York: Routledge, 2010.

MLA استشهاد

Gensler, Harry J. Introduction to Logic. 2nd ed. Routledge, 2010.