Thomas, Wayne M.
The Sales manager's success manual
Amacom, 2008
 Buku Teks
Thomas, Wayne M.
The sales manager's success manual
Amacom, 2008
 eBooks
Jobber, David
Selling and sales management
Prentice-Hall, 2000
 Buku Teks
Miller, William
Proactive sales management: how to lead, motivate, and stay ahead of the game
American Management Association, 2009
 eBooks
Lambert, Brian
10 steps to successful sales
American Society for Training & Development, 2010
 eBooks