Sullivan, Rick
American Society for Training & Development Press, 2005
eBooks
Kreitzberg, Charles B.
Harcourt Brace Jovanovich, 1972
Buku Teks SO
Sommers-Flanagan, John
John Wiley & Sons, 2012
Buku Teks SO
Sheehan, Elaine, 1964-
Element Books, 1995
Buku Teks
Kenakin, Terrence P.
Academic Press, 2014
Buku Teks