Ulrich, Dave
Leadership sustainability : seven disciplines to achieve the changes great leaders know they must make / Dave Ulrich, Norm Smallwood
McGraw-Hill, 2013
 Buku Teks
Managers as leaders
Harvard Bussiness School Press, 1990
 Buku Teks
Terry, Robert W.
Authentic leadership : courage in action
Jossey-Bass Publishers, 1994
 Buku Teks
Blank, Warren
The 108 skills of natural born leaders
[American Management Association, ], 2001
 eBooks
Flaum, Sandra A.
The 100-mile walk: a father and son on a quest to find the essence of leadership
American Management Association, 2006
 eBooks