McClelland, David Clarence
Human motivation
Cambridge University Press, 1987
 Buku Teks SO
Reeve, Johnmarshall
Understanding motivation and emotion
John Wiley & Sons, Inc., 2015
 Buku Teks SO
Buck, Ross
Human motivation and emotion
John Wiley & Sons, 1988
 Buku Teks SO
McKee, Jeffrey K.
Understanding human evolution
Pearson/Prentice Hall, 2005
 Buku Teks
Hyde, Janet Shibley
Understanding human sexuality
McGraw-Hill, 1983
 Buku Teks SO