Nevid, Jeffrey S., author
Prentice-Hall, 1997
Buku Teks
Kuther, Tara L., author
Wadsworth/Cengage Learning, 2013
Buku Teks
Smith, Peter B., author
Harvester Wheatsheaf, 1993
Buku Teks
Baron, Robert A., author
Allyn and Bacon, 1987
Buku Teks
Baron, Robert A., author
Allyn and Bacon, 1994
Buku Teks