Powers, Scott Kline, 1950-
McGraw-Hill, 2012
Buku Teks SO
Wickens, Christopher D.
HarperCollins Publishers , 1992
Buku Teks SO
Hickman, Ray
Macmillan, 1995
Buku Teks SO
Franklin, Maren
American Society for Training & Development, 2006
eBooks
Callahan, Madelyn
[American Society for Training and Development Press, American Society for Training and Development Press], 2006
eBooks