Woo, Julia T.
Harper & Row , 1986
Buku Teks
Vrooman, Rona J., author
[American Society for Training & Development Press, American Society for Training & Development Press], 2000
eBooks
Scheerens, Jaap, editor
Springer, 2012
eBooks
Fisher, B. Aubrey, 1937-, author
McGraw-Hill, 1990
Buku Teks
Fox, William M
Jossey Bass, 1987
Buku Teks