Rathus, Spencer A., author
Belmont, CA, 2004
Buku Teks
Valentino, Lisa, author
Thomson Wadsworth, 2003
Buku Teks
Hebb, Donald Olding
W.B. Saunders Company, 1961
Buku Teks
Kalat, James W., author
Thomson Wadsworth, 2008
Buku Teks
Cox, Richard H., author
McGraw-Hill, 2007
Buku Teks