Παραπομπή APA

Gupta, P. (1994). Operations research. S.Chand.

Παραπομπή Chicago Style

Gupta, Premkumar. Operations Research. New Delhi: S.Chand, 1994.

Παραπομπή MLA

Gupta, Premkumar. Operations Research. S.Chand, 1994.