Malcolm Hardy
Weidenfeld and Nicolson, 1990
Buku Teks
Hetherington, Mavis E.
McGraw-Hill , 2006
Multimedia
Hurlock, Elizabeth Bergner, 1898-, author
McGraw-Hill, 1985
Buku Teks
Hurlock, Elizabeth Bergner, 1898-, author
McGraw-Hill, 1978
Buku Teks
Santrock, John W., author
McGraw-Hill, 2001
Buku Teks