Bass, Bernard M., author
Allyn and Bacon, 1979
Buku Teks
Landy, Frank J., author
Wiley, 2013
Buku Teks
Jex, Steve M., author
John Wiley & Sons, 2002
Buku Teks
Aamodt, Michael G., author
Wadsworth and Cengage Learning, 2013
Buku Teks
Furnham, Adrian, author
Psychology Press, 2002
Buku Teks