Schein, Edgar H., author
Prentice Hall of India, 1979
Buku Teks
Riggio, Ronald E., author
Pearson, 2013
Buku Teks
John Wiley & Sons, 2003
Buku Teks
edited by Peter Warr
Panguin Books, 1978
Buku Teks
Munsterberg, Hugo, 1916-1995, author
Floating Press, 2009
Buku Teks