Harvard Business School Press, 1999
Buku Teks
A Harvard Business Review Paperback, 2003
Buku Teks
Phillips, Jeffrey, author
McGraw-Hill, 2012
Buku Teks
Al Vina Mirayanti, author
2015
UI - Tesis (Membership)
Lewis, Clive, author
American Society for Training & Development, 2008
eBooks