Harvey, Donald F.
Prentice Hall International, 1996
Buku Teks
Harvey, Donald F.
Prentice-Hall, 1992
Buku Teks
Burke, W. Warner
Addison-Wesley, 1987
Buku Teks
McArdle, Geri
American Society for Training & Development, 2006
eBooks
Bennis, Warren G.
McGraw-Hill, 1966
Buku Teks