APA استشهاد

Gries, D., & Schneider, f. B. (1993). Logical approach to discrete math. Springer-Verlag.

استشهاد بنمط شيكاغو

Gries, David, و fred B. Schneider. Logical Approach to Discrete Math. New york: Springer-Verlag, 1993.

MLA استشهاد

Gries, David, و fred B. Schneider. Logical Approach to Discrete Math. Springer-Verlag, 1993.