edited by S.R. Epton
John Wiley & Sons, 1983
Buku Teks SO
Howard, Keith
MCB University Press, 1990
Buku Referensi
Gibson, John E.
John Wiley & Sons, 1981
Buku Teks SO
Waagen, Alice K.
American Society for Training and Development Press, 2000
eBooks
Vinkler, Peter
Chandos Publishing, 2010
Buku Teks SO