Shinn, George
Introduction to professional selling / George Shinn
Gregg Division, McGraw-Hill, 1982
 Buku Teks
Manning, Gerald L., author
Selling today : building quality partnerships
Prentice Hall International, 1998
 Buku Teks
Williams, Alan
All about selling / Alan Williams
McGraw-Hill, 1983
 Buku Teks
Johnson, Spencer, author
The one minute sales person
Harper Collins, 2004
 Buku Teks
Gamble, Teri Kwal, author
Sales scripts that sell
American Society for Training & Development, 2007
 eBooks
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