Santrock, John W., author
W.C. Brown Publisher, 1991
Buku Referensi
Passer, Michael W., author
McGraw-Hill, 2009
Buku Teks
Gazzaniga, Michael S., author
Norton & Company, 2003
Buku Teks SO
Passer, Michael W., author
McGraw-Hill, 2007
Buku Teks
Coon, Dennis, author
Wadsworth , 2001
Buku Teks