Wilkins, David, 1971-, author
Mc-Graw-Hill, 2013
Buku Teks
edited by Stephen Haines
Jaico Publishing House, 2007
Buku Teks
Sindell, Milo, author
[American Society for Training & Development Press, American Society for Training & Development Press], 2001
eBooks
edited by Claudia Peus, Susanne Braun, Birgit Schyns
Emerald, 2016
eBooks
Tracy, Brian, author
American Management Association, 2010
eBooks