APA استشهاد

Levy,, L. S. (1980). Discrete structures of computer science (1.). Wiley Eastern.

استشهاد بنمط شيكاغو

Levy,, Leon S. Discrete Structures of Computer Science. 1. New Delhi: Wiley Eastern, 1980.

MLA استشهاد

Levy,, Leon S. Discrete Structures of Computer Science. 1. Wiley Eastern, 1980.