Halsey, Vicki, author
Berrett Koehler, 2011
Buku Teks
Lucas, Bob, author
American Management Association, 2008
eBooks
Larsen, Nan Gesche, author
[American Society for Training & Development Press, American Society for Training & Development Press], 2002
eBooks
Larry Israelite, editor
American Society for Training & Development, 2006
eBooks
Rivera, Ray J., author
American Society for Training & Development, 2007
eBooks