APA-referens

Prem Kumar Gupta, Gupta, P. K. . .., & Hira, D. S. . . .. (1999). Introduction to operations research. S Chand and company.

Chicago-stil citat

Prem Kumar Gupta, Prem Kumar Gupta, och D S. Hira. Introduction to Operations Research. New Delhi: S Chand and company, 1999.

MLA-referens

Prem Kumar Gupta, et al. Introduction to Operations Research. S Chand and company, 1999.