Bass, Bernard M., author
Allyn and Bacon, 1973
Buku Teks
McKenna, Eugene, author
Psychology Press, 2000
Buku Referensi
Dipboye, Robert L., author
Harcourt Brace College, 1994
Buku Teks
Furnham, Adrian, author
Psychology Press, 2002
Buku Teks
Landy, Frank J., author
Wiley, 2013
Buku Teks