Myers, Anne, author
Wadsworth and Cengage Learning, 2012
Buku Teks
American Psychological Association, 2018
Majalah, Jurnal, Buletin
Kantowitz, Barry H., author
Cengage Learning, 2015
Buku Teks
the American Psychological Association, 2018
Majalah, Jurnal, Buletin
Solso, Robert L., 1933-, author
Boston, 2002
Buku Teks