Bob Hamlin, Jane Keep, Ken Ash
Prentice-Hall, 2001
Buku Teks
Prentice-Hall, 2000
Buku Teks
Spector, Bert, author
Pearson, 2013
Buku Teks
Cowan, Stella Louise, author
American Society for Training & Development, 2012
eBooks
Palmer, Ian R., author
McGraw-Hill, 2006
Buku Teks