APA (7 वां संस्करण) प्रशस्ति पत्र

GILLETT BILLY E. (1976). INTRODUCTION TO OPERATIONS RESEARCH. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

GILLETT BILLY E. INTRODUCTION TO OPERATIONS RESEARCH. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 1976.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

GILLETT BILLY E. INTRODUCTION TO OPERATIONS RESEARCH. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 1976.