Gupta, P. K. (1993). Operations Research. S. Chand & Company.
Cita Chicago (17th ed.)Gupta, P. K. Operations Research. New Delhi: S. Chand & Company, 1993.
Cita MLA (9th ed.)Gupta, P. K. Operations Research. S. Chand & Company, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.