How to motivate employees: management development
editor, Cat Sharpe
[American Society for Training and Development Press, American Society for Training and Development Press], 2000
 eBooks
Dowling, William F.
How managers motivate the imperatives of supervision
McGraw-Hill Kogakusha, 1978
 Buku Teks SO
Smallbone, Douglas
How to motivate and remunerate your salesmen / Douglas Smallbone
Staples Press, 1971
 Buku Teks SO
Miller, William
Proactive sales management: how to lead, motivate, and stay ahead of the game
American Management Association, 2009
 eBooks
Bruce, Anne
How to motivate every employee: 24 proven tactics to spark productivity in the workplace
McGraw-Hill, 2003
 Buku Teks SO