APA引文

Prem Kumar Gupta and Hira, D. S. (2012). Operations Research.

Chicago Edition Citation

Prem Kumar Gupta and Hira, D S. Operations Research. S. Chand & Co.,: New Delhi, 2012.

MLA引文

Prem Kumar Gupta and Hira, D S. Operations Research. 2012.

警告：這些引文格式不一定是100％准確.