edited by Ross Vasta
Jessica Kingsley, c1992
Buku Teks
Santrock, John W., author
McGraw-Hill, 2001
Buku Teks
Nadelman, Lorraine, author
Lawrence Erlbaum, 2004
Buku Teks
Keenan, Thomas, author
Sage Publications, 2004
Buku Teks
Cobb, Nancy J., author
Mayfield Publishing Company , 2001
Buku Teks