Miller, W. (2001). ProActive sales management: How to lead, motivate, and stay ahead of the game. New York: AMACOM.
Παραπομπή Chicago StyleMiller, William. ProActive Sales Management: How to Lead, Motivate, and Stay Ahead of the Game. New York: AMACOM, 2001.
Παραπομπή MLAMiller, William. ProActive Sales Management: How to Lead, Motivate, and Stay Ahead of the Game. New York: AMACOM, 2001.
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