APA-referens (7:e uppl.)

Gupta, P. K. H. (2016). Operations Research. S.Chand.

Chicago-referens (17:e uppl.)

Gupta, Prem Kumar; Hira. Operations Research. New Delhi: S.Chand, 2016.

MLA-referens (9:e uppl.)

Gupta, Prem Kumar; Hira. Operations Research. S.Chand, 2016.