Greshes Warren. (2006). The Best Damn Sales Book Ever: 16 Rock-Solid Rules for Achieving Sales Success! (Hardcover). Untied States: Wiley.
Chicago Style CitationGreshes Warren. The Best Damn Sales Book Ever: 16 Rock-Solid Rules for Achieving Sales Success! (Hardcover). Untied States: Wiley, 2006.
Cita MLAGreshes Warren. The Best Damn Sales Book Ever: 16 Rock-Solid Rules for Achieving Sales Success! (Hardcover). Untied States: Wiley, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.