Παραπομπή APA

Goel, B. S. a. . M. (1985). Operations research (5 Edition.).

Παραπομπή Chicago Style

Goel, B S and Mittal. Operations Research. 5 Edition. Pragati Prakashan, Meerut, 1985.

Παραπομπή MLA

Goel, B S and Mittal. Operations Research. 5 Edition. 1985.