Bee, Helen L., author
Allyn and Bacon, 2010
Buku Teks
Weis, Robert, author
Sage, 2008
Buku Teks
Davies, Douglas, 1942-, author
The Guilford Press, 2004
Buku Teks
Santrock, John W., author
McGraw-Hill, 2007
Buku Teks
Mussen, Paul H.
Prentice-Hall, 1969
Buku Teks