APA (7th ed.) Citation

Gupta, P. K., & Hira, D. S. (2010). Problems in Operations Research: Principles and solutions. S. Chand & Co..

Chicago Style (17th ed.) Citation

Gupta, P. K., and D. S. Hira. Problems in Operations Research: Principles and Solutions. New Delhi: S. Chand & Co., 2010.

MLA (9th ed.) Citation

Gupta, P. K., and D. S. Hira. Problems in Operations Research: Principles and Solutions. S. Chand & Co., 2010.