APA (7 वां संस्करण) प्रशस्ति पत्र

Enrick, N. L. (1965). Management operations research. Holt, Rinehart and Winston.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Enrick, Norbert Lloyd. Management Operations Research. New York: Holt, Rinehart and Winston, 1965.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Enrick, Norbert Lloyd. Management Operations Research. Holt, Rinehart and Winston, 1965.