APA (7th ed.) Citation

Gupta, P. K. (1981). Problems in operations research (1st edition.). S Chand.

Chicago Style (17th ed.) Citation

Gupta, P K. Problems in Operations Research. 1st edition. New Delhi: S Chand, 1981.

MLA (9th ed.) Citation

Gupta, P K. Problems in Operations Research. 1st edition. S Chand, 1981.