APA استشهاد

Biswal,, P. C. (2009). Discrete mathematics and graph theory (2.). PHI Learning.

استشهاد بنمط شيكاغو

Biswal,, Purna Chandra. Discrete Mathematics and Graph Theory. 2. New Delhi: PHI Learning, 2009.

MLA استشهاد

Biswal,, Purna Chandra. Discrete Mathematics and Graph Theory. 2. PHI Learning, 2009.