Marvin R. Goldfried, editor
American Psychological Association, 2001
Buku Teks
Kolstad, C. Kenneth, author
McGraw-Hill, 1979
Buku Teks
Bien, Thomas, author
Wisdom Publications, 2006
Buku Teks
edited by I. Bruna Seu, M. Colleen Heenan
Sage, 1998
Buku Teks
Hamstra, Bruce, author
St. Martin's Press, 1994
Buku Teks