Christensen, Mary, 1951- , author
Be a direct selling superstar: achieve financial freedom for yourself and others as a direct sales leader
[American Management Association;, ], 2013
 eBooks
Jobber, David, author
Selling and sales management
Prentice-Hall, 2000
 Buku Teks
Lambert, Brian W., author
World-class selling: new sales competencies
American Society for Training & Development, 2009
 eBooks
Hogan, Kevin, author
Selling yourself to others : the new psychology of sales
Mumbai: Magna Publishing, 2003,
 Buku Teks
Eades, Keith M., author
Proses penjualan revolusioner yang mengubah cara anda menjual: The new solution selling: the revolutionary sales process that is changing the way people sell
Andi, 2005
 Buku Teks
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