Shaver, Warren, author
[American Society for Training & Development Press, ], 2000
eBooks
Esty, Daniel C., author
John Wiley & Sons. Inc., 2009
Buku Teks
Emmerichs, Jack, author
Summit PA. Tab Books, 1983
Buku Teks
Johnson, J. Richard, author
John F. Rider, 1962
Buku Teks
Nadler, David A
Addison-Wesley, 1977
Buku Teks