Furnham, Adrian, author
Psychology Press, 2002
Buku Teks
Aamodt, Michael G., author
Thomson/Wadsworth, 2004
Buku Teks
Schein, Edgar H., author
Prentice-Hall, 1980
Buku Teks
Bass, Bernard M., author
Allyn and Bacon, 1979
Buku Teks
John Wiley & Sons , 2009
Buku Teks