Tracy, Brian
How the best leaders lead: proven secrets to getting the most out of yourself and others
American Management Association, 2010
 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
Sindell, Milo
Leadership development: management development
[American Society for Training & Development Press, American Society for Training & Development Press], 2001
 eBooks
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