Berk, Laura E., author
Allyn and Bacon, 1989
Buku Teks
Berk, Laura E., author
Allyn and Bacon, 1997
Buku Teks
Santrock, John W., author
Erlangga, 2007
Buku Teks
Illingworth, Ronald S.
Churchill Livingstone, 1987
Buku Teks
Davies, Douglas, 1942-, author
The Guilford Press, 2004
Buku Teks