1
by Owen, Harrison
Published 2000
Berrett-Koehler Publishers

2
by Cartwright, Talula
Published 2003
Center for Creative Leadership

3
by Cross, Michael
Published 2014
Syngress

5
by Griffin, Michael P.
Published 2015
American Management Association

7
by Johnson, Larry
Published 2003
AMACOM, American Management Association

8
by Blanchard, Kenneth H.
Published 2015
Berrett-Koehler Publishers