APA (7 वां संस्करण) प्रशस्ति पत्र

Baily, P., & Farmer, D. j. a. (1981). Purchasing principles and management (4th ed.). Pitnam.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Baily, Peter, और David joint auth Farmer. Purchasing Principles and Management. 4th ed. London: Pitnam, 1981.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Baily, Peter, और David joint auth Farmer. Purchasing Principles and Management. 4th ed. Pitnam, 1981.