King, G. Secrets of Selling: How to win in any sales situation (2.). Pearson Education UK.
Chicagoスタイル(17版)引用形式King, Geoff. Secrets of Selling: How to Win in Any Sales Situation. 2. Pearson Education UK.
MLA(8版)引用形式King, Geoff. Secrets of Selling: How to Win in Any Sales Situation. 2. Pearson Education UK.
警告: この引用は必ずしも正確ではありません.