APA aipamena

Hopkins, T., & Jamison, W. (1982). How to master the art of selling (2nd ed.). Champion Press.

Chicago Style aipamena

Hopkins, Tom, and Warren Jamison. How to Master the Art of Selling. 2nd ed. Scottsdale, Ariz: Champion Press, 1982.

MLA aipamena

Hopkins, Tom, and Warren Jamison. How to Master the Art of Selling. 2nd ed. Champion Press, 1982.