Παραπομπή APA

Gupta, P. K. (2002). Problems in operations research: Principles and solutions. S Chand.

Παραπομπή Chicago Style

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

Παραπομπή MLA

Gupta, P K. Problems in Operations Research: Principles and Solutions. S Chand, 2002.