Coppett, J. I., & Staples, W. A. (1990). Professional selling: A relationship management process. South-Western Pub. Co..
Chicagoスタイル(17版)引用形式Coppett, John I., , William A. Staples. Professional Selling: A Relationship Management Process. Cincinnati, OH: South-Western Pub. Co., 1990.
MLA(9版)引用形式Coppett, John I., , William A. Staples. Professional Selling: A Relationship Management Process. South-Western Pub. Co., 1990.
警告: この引用は必ずしも正確ではありません.