Gupta, P., & Hira D.S. (2020). Operations Research (7th.). S.Chand Publisher.
芝加哥风格引文Gupta, P.K, 与 Hira D.S. Operations Research. 7th. New Delhi: S.Chand Publisher, 2020.
MLA引文Gupta, P.K, 与 Hira D.S. Operations Research. 7th. S.Chand Publisher, 2020.
警告:这些引文格式不一定是100%准确.