Nilsson, William P.
Adisson Wesley, 1987
Buku Teks
Russell, Susan, author
[American Society for Training and Development Press, American Society for Training and Development Press], 1999
eBooks
Andrews, Kenneth R., author
Harvard University , 1966
Buku Teks
Hague, Hawden, author
Macmillan, 1974
Buku Teks
David, Mark, author
[American Society for Training & Development Press, American Society for Training & Development Press], 2002
eBooks