Frank, William W.
How to outsell : the born salesman / by William W. Frank and Charless L. Lapp
Macmillan, 1959
 Buku Teks
Allen, Peter
Selling
Pitman, 1998
 Buku Teks
Rodgers, Mark
Accelerate the sale : kick-start your personal selling style to close more sales, faster
McGraw-Hill , 2011
 Buku Teks
Ahmad Hargi Septiawan
Evaluasi pelatihan Selling Skill karyawan bagian Sales Promotion Girl PT. Guna Layan Kuasa Jakarta Pusat = Evaluation training of Selling Skill about employees sales Promotion Girl employees PT. Guna Layan Kuasa Jakarta Pusat
Universitas Indonesia, 2013
 UI - Skripsi Membership
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