Frank, William W.
How to outsell : the born salesman / by William W. Frank and Charless L. Lapp
Macmillan, 1959
Buku Teks
Lapp, Charles L.
Successful selling strategies : how to climb the ladder to sales succes / Charles L. Lapp
McGraw-Hill, 1957
Buku Teks
Russel, Frederic A.
Textbook of salesmanship / Frederic A. Russell, Frank H. Beach
McGraw-Hill, 1955
Buku Teks
Russell, Frederic A.
Textbook of salesmanship / Frederic A. Russell [and] Frank H. Beach
McGraw-Hill, 1959
Buku Teks
Ivey, Paul W.
Successful salesmanship / by Paul W. Ivey, Walter Horvath
Prentice-Hall, 1961
Buku Teks
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