Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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