Stolovitch, Harold D., author
American Society for Training & Development, 2011
eBooks
Springer, 2012
eBooks
Morgan, Gareth, 1943-, author
SAGE Publications, Inc, 2006
Buku Teks
Ballenger, James C., author
Mosby , 2003
Buku Teks
Gardner, James, author
New Page Books, 2005
Buku Teks