APA (7 वां संस्करण) प्रशस्ति पत्र

Futrell, C. (1996). Fundamentals of selling: Customers for life (5th ed.). Irwin.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Futrell, Charles. Fundamentals of Selling: Customers for Life. 5th ed. Chicago: Irwin, 1996.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Futrell, Charles. Fundamentals of Selling: Customers for Life. 5th ed. Irwin, 1996.