Edward Elgar, 2005
Buku Teks
Russell, Susan, author
[American Society for Training and Development Press, American Society for Training and Development Press], 1999
eBooks
Dyah Styarini, author
2012
UI - Tesis (Open)
Cypher, James M., author
Routledge, 1997
Buku Teks
Kharisma Bintang Alghazy, author
2018
UI - Skripsi (Membership)