Cita APA (7th ed.)

Seelye,Richard S. (1993). The selling starts when the customer says no: The twelve toughest sells and how to overcome them. Probus Publishing Co.

Cita Chicago (17th ed.)

Seelye,Richard S. The Selling Starts When the Customer Says No: The Twelve Toughest Sells and How to Overcome Them. Chicago: Probus Publishing Co, 1993.

Cita MLA (9th ed.)

Seelye,Richard S. The Selling Starts When the Customer Says No: The Twelve Toughest Sells and How to Overcome Them. Probus Publishing Co, 1993.

Atenció: Aquestes cites poden no estar 100% correctes.