Tracy, Brian
How the best leaders lead: proven secrets to getting the most out of yourself and others
American Management Association, 2010
 eBooks
Sindell, Milo
Leadership development: management development
[American Society for Training & Development Press, American Society for Training & Development Press], 2001
 eBooks
Allen, Scott J.
The little book of leadership development : 50 ways to bring out the leader in every employee
American Management Association, 2011
 Buku Teks
Leadership lessons from compelling contexts
edited by Claudia Peus, Susanne Braun, Birgit Schyns
Emerald, 2016
 eBooks
Vardaman, George T.
Dynamics of managerial leadership /​ by George T. Vardaman.
Auerbach Publishers, 1973
 Buku Teks