Cita APA (7th ed.)

Gupta, P. K., & Hira, D. S. (1994). Problems in Operations Research. Sultan Chand & Sons.

Cita Chicago (17th ed.)

Gupta, P. K., i D. S. Hira. Problems in Operations Research. New Delhi: Sultan Chand & Sons, 1994.

Cita MLA (9th ed.)

Gupta, P. K., i D. S. Hira. Problems in Operations Research. Sultan Chand & Sons, 1994.