edited by W. T. Singleton
MTP Press Limited, 1979
Buku Teks
Bambang Triasmono, author
Universitas Indonesia, 2006
UI - Tesis (Membership)
Flagello, Jane R., author
American Management Association, 2009
eBooks
Holt, Katherine E., author
[;American Society for Training & Development Press, American Society for Training & Development Press], 2003
eBooks
Wilkinson, Amy, 1972-, author
Simon & Schuster, 2015
Buku Teks