Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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