Eko H. Setianto, author
Elex Media Komputindo, 2009
Buku Teks
Hartley, Darin, author
American Society for Training & Development, 2010
eBooks
W. Imanto, author
Andi Offset, 2007
Buku Teks
Angell, David, author
Addison-Wesley, 1995
Buku Teks
Zebua, Fajar Y. S., author
MediaKom, 2008
Buku Teks