APA (7 वां संस्करण) प्रशस्ति पत्र

GUPTA, P. K. (2012). INTRODUCTION TO OPERATIONS RESEARCH (1ST ED.). S.CHAND&CO.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

GUPTA, PREM KUM. INTRODUCTION TO OPERATIONS RESEARCH. 1ST ED. NEW DELHI: S.CHAND&CO, 2012.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

GUPTA, PREM KUM. INTRODUCTION TO OPERATIONS RESEARCH. 1ST ED. S.CHAND&CO, 2012.