Miller, George A.
Basic Books, 1967
Buku Teks
Santrock, John W.
McGraw-Hill, 2003
Multimedia
Baron, Robert A.
Simon & Schuster, 1992
Buku Teks
Gray, Peter
Worth Publishers, 1999
Buku Teks
Ciccarelli, Saundra K.
Pearson - Prentice Hall, 2006
Buku Teks