Lapp, Charles L.
Successful selling strategies : how to climb the ladder to sales succes
McGraw-Hill, 1957
Buku Teks SO
Allen, Peter
Selling
Pitman, 1998
Buku Teks SO
Williams, Alan
All about selling
McGraw-Hill, 1983
Buku Teks SO
Rodgers, Mark
Accelerate the sale : kick-start your personal selling style to close more sales, faster
McGraw-Hill , 2011
Buku Teks SO
Breithaupt, Tim
10 steps to sales success: the proven system that can shorten the selling cycle, double your close ratio, and significantly increase your income
American Management Association, 2003
eBooks