Barret, Peter
Taylor and Francis, 2008
Buku Teks SO
Harvard Business School Press, 2001
Buku Teks SO
Holt, Katherine E.
[;American Society for Training & Development Press, American Society for Training & Development Press], 2003
eBooks
Hodgetts, Richard M.
John Wiley & Sons, 2002
Buku Teks
Hatten, Timothy S.
Prentice-Hall, 1997
Buku Referensi