Myers, Anne, author
Wadsworth and Cengage Learning, 2012
Buku Teks
Kantowitz, Barry H., author
Cengage Learning, 2015
Buku Teks
Solso, Robert L., 1933-, author
Boston, 2002
Buku Teks
American Psychological Association, 2018
Majalah, Jurnal, Buletin
Herve Abdi, author
Oxford University Press, 2009
Buku Teks