Gupta, P. K. H. (2016). Operations Research. S.Chand.
Chicago-čujuhus (17. p.)Gupta, Prem Kumar; Hira. Operations Research. New Delhi: S.Chand, 2016.
MLA-čujuhus (9. p.)Gupta, Prem Kumar; Hira. Operations Research. S.Chand, 2016.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.