APA Edition Citation

Gupta, P. K., & Hira , D. S. (1991). Problems in operations research: Principles and solutions. S Chand.

Chicago Edition Citation

Gupta, Prem Kumar, and D. S. Hira. Problems in Operations Research: Principles and Solutions. New Delhi: S Chand, 1991.

MLA Edition Citation

Gupta, Prem Kumar, and D. S. Hira. Problems in Operations Research: Principles and Solutions. S Chand, 1991.