Hart, Lois B
The leadership training activity book: 50 exercises for building effective leaders
AMACOM, 2005
 Buku Teks
Achua, Christopher F.
Effective leadership
South Western Cengage Learning, 2013
 Buku Teks
Mackoff, Barbara
The inner work of leaders : leadership as a habit of mind
American Management Association, 2001
 Buku Teks
Zenger, John H.
The Handbook for leaders: 24 lessons for extraordinary leadership
McGraw-Hill, 2003
 Buku Teks
Zenger, John H.
The handbook for leaders: 24 lessons for extraordinary leadership
McGraw-Hill, 2004
 Buku Referensi