Goldstein, E. Bruce, author
Thomson Wadsworth, 2008
Buku Teks
Goldstein, E. Bruce, author
Thomson Wadsworth, 2005
Buku Teks
Flavell, John H., author
Prentice-Hall, 1993
Buku Teks
Best, John B., author
West Publishing, 1989
Buku Teks
edited by George Houghton
Psychology Press, 2005
Buku Teks