Professional psychology : research and practice
American Psychological Association, {s.a}
 Majalah, Jurnal, Buletin
Butcher, James N.
Abnormal psychology : core concepts
Pearson, 2008
 Buku Teks SO
Professional psychology in Canada
edited by Keith S. Dobson and Deborah J.G. Dobson
Hogrefe and Huber , 1993
 Buku Teks SO
Lefton, Lester A.
Psychology
Allyn and bacon , 1997
 Buku Teks SO
Wortman, Camille B.
Psychology
McGraw-Hill, 1992
 Buku Teks SO