Jones, John G.
Alexander Hamilton Institute, 1961
Buku Teks SO
Still, Richard R.
Prentice Hall International, 1988
Buku Teks
Ohai, Tim
American Society for Training & Development, 2008
eBooks
Abu Hilwa Aijawa
Restu Agung, 2005
Buku Teks SO
Spiro, Rosann L.
McGraw-Hill-Irwin, 2003
Buku Teks SO