Biech, Elaine.
ASTD Press, 2009
Multimedia
Coates, Dennis E., author
American Society for Training & Development, 2007
eBooks
Nilson, Carolyn, author
[American Management Association, ], 2003
eBooks
Doane, Bonnie Munro, author
Howell Book House, 2001
Buku Teks
McArdle, Geri E., author
American Society for Training & Development, 2007
eBooks