APA (7th ed.) Citation

Hira, D. S., & Gupta, P. K. (1995). Problems in Operation Research (Revised ed.). S. Chand & Company.

Chicago Style (17th ed.) Citation

Hira, D. S., and P. K. Gupta. Problems in Operation Research. Revised ed. New Delhi: S. Chand & Company, 1995.

MLA (9th ed.) Citation

Hira, D. S., and P. K. Gupta. Problems in Operation Research. Revised ed. S. Chand & Company, 1995.