APA استشهاد

Erickson, M. J. (1996). Introduction to combinatorics (2nd ed.). Wiley.

استشهاد بنمط شيكاغو

Erickson, Martin J. Introduction to Combinatorics. 2nd ed. New York: Wiley, 1996.

MLA استشهاد

Erickson, Martin J. Introduction to Combinatorics. 2nd ed. Wiley, 1996.