Pederson, Carlton A.
Salesmanship : principles and methods / Carlton A. Pederson, Milburn D. Wright
Richard D. Irwin, Inc., 1966
 Buku Teks
Pederson, Carlton A., author
Salesmanship: principles and methods
Richard D. Irwin. Inc., 1957
 Buku Teks
Converse, Paul Dulaney, 1889-, author
Essentials of distribution / Paul D. Converse
Prentice-Hall, 1947
 Buku Teks
Seltz, David D., author
Industrial selling: gateway to the million dollar sale! / David D. Seltz
McGraw-Hill, 1976
 Buku Teks
Crissy, W.J.E.
Effective selling : a short course for professionals / W.J.E. Crissy, Isabella C.M. Cunningham, and William H. Cunningham
John Wiley & Sons, 1977
 Buku Teks
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