Schwartz, Barry
W.W. Norton, 1991
Buku Teks SO
Schwartz, Barry
W.W. Norton, 1991
Buku Teks SO
Lutz, John
Waveland Press, 2005
Buku Teks SO
the American Psychological Association, 2018
Majalah, Jurnal, Buletin
Lieberman, David A.
Thomson Wadsworth, 2004
Buku Teks SO