Lambert, Brian, author
10 steps to successful sales
American Society for Training & Development, 2010
 eBooks
Seidman, Dan, author
Sales training that drives revenue: ISD
American Society for Training & Development, 2008
 eBooks
Lambert, Brian W., author
World-class selling: new sales competencies
American Society for Training & Development, 2009
 eBooks
Sant, Tom, author
The giants of sales : what Dale Carnegie, John Patterson, Elmer Wheeler, and Joe Girard can teach you about real sales success
American Management Association, 2006
 eBooks
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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