GUPTA PREM KUMAR. (2005). OPERATIONS RESEARCH. S.CHAND & COMPANY LTD.
芝加哥风格引文GUPTA PREM KUMAR. OPERATIONS RESEARCH. NEW DELHI: S.CHAND & COMPANY LTD, 2005.
MLA引文GUPTA PREM KUMAR. OPERATIONS RESEARCH. S.CHAND & COMPANY LTD, 2005.
警告：这些引文格式不一定是100％准确.