Fakultas Psikologi Universitas Surabaya, 2006
Majalah, Jurnal, Buletin
American Psychological Association, 1991
Majalah, Jurnal, Buletin
Groth-Marnat, Gary
Van Nostrand Reinhold, 1984
Buku Teks SO
Groth-Marnat, Gary
John Wiley & Sons, 1999
Buku Teks SO
Anastasi, Anne
Macmillan, 1988
Buku Teks SO