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