Santrock, John W.
McGraw-Hill, 2003
Multimedia
Burton, Lorelle, author
John Wiley & Sons Australia, 2009
Buku Teks
Baron, Robert A., author
Simon & Schuster, 1992
Buku Teks
Gray, Peter, author
Worth Publishers, 1999
Buku Teks
Ciccarelli, Saundra K., author
Pearson - Prentice Hall, 2006
Buku Teks