Rasmussen, Paul R, author
American Psychological Association, 2005
Buku Teks
Spence, Susan H., author
Chapman & Hall, 1991
Buku Teks
Butler, Gillian, author
The Guilford Press, 2008
Buku Teks
John R.White, Arthur S.Freeman, editor
American Psychological Association, 2000
Buku Teks
edited by John R. White and Arthur S. Freeman
American Psychology Associaion, 2005
Buku Teks