Munter, Mary
Prentice-Hall, 2002
Buku Teks
Hon, David
John Wiley & Sons, 1980
Buku Teks
Estop, Tora
[American Society for Training and Development Press;, ], 2005
eBooks
Fardis, Michael N., editor
Springer, 2012
eBooks
Bianki, V.
Foreign Languages Publishing, [date of publication not identified]
Buku Teks