Williams, Alan
All about selling / Alan Williams
McGraw-Hill, 1983
 Buku Teks
Allen, Peter, author
Selling
Pitman, 1998
 Buku Teks
Ahmad Hargi Septiawan, author
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)
Wingate, John W., author
Fundamentals of selling
South-Western Publishing, 1959
 Buku Teks
Allen, Robert Y., author
Selling dynamics
McGraw-Hill, 1984
 Buku Teks
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