APA استشهاد

Gupta, P. (2002). Problems in operations research. S.Chand.

استشهاد بنمط شيكاغو

Gupta, P.K. Problems in Operations Research. New Delhi: S.Chand, 2002.

MLA استشهاد

Gupta, P.K. Problems in Operations Research. S.Chand, 2002.