Sutton, Kelso, author
The technique of selling
McGraw-Hill, 1949
 Buku Teks
Allen, Peter, author
Selling
Pitman, 1998
 Buku Teks
Allen, Robert Y., author
Selling dynamics
McGraw-Hill, 1984
 Buku Teks
Wingate, John W., author
Fundamentals of selling
South-Western Publishing, 1959
 Buku Teks
Kurtz, David L., author
Professional selling
Business Publications, 1982
 Buku Teks
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