Hopkins, T., & Jamison, W. (1982). How to master the art of selling (2nd ed.). Champion Press.
Chicagoスタイル(17版)引用形式Hopkins, Tom, , Warren Jamison. How to Master the Art of Selling. 2nd ed. Scottsdale, Ariz: Champion Press, 1982.
MLA(9版)引用形式Hopkins, Tom, , Warren Jamison. How to Master the Art of Selling. 2nd ed. Champion Press, 1982.
警告: この引用は必ずしも正確ではありません.