Maria C.W. Peeters, Jan de Jonge and Toon W. Taris, editors
Wiley-Blackwell, 2014
Buku Teks
Aamodt, Michael G.
Wadsworth/Cengage Learning, 2013
Buku Teks
Maddi, Salvatore R.
AMACOM, 2005
Buku Teks
Leiter, Michael P.
Jossey-Bass , 2005
Buku Teks
edited by P.J.D. Drenth ... [and others]
Wiley, 1984
Buku Teks