APA (7 वां संस्करण) प्रशस्ति पत्र

Westerman, M. D. (1993). The business environmental handbook. The Oasis Press/PSI Research.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Westerman, Martin D. The Business Environmental Handbook. Grants Pass, Oregon: The Oasis Press/PSI Research, 1993.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Westerman, Martin D. The Business Environmental Handbook. The Oasis Press/PSI Research, 1993.