Zanden, James W. Vander, author
McGraw-Hill, 1993
Buku Teks
Papalia, Diane E., author
McGraw-Hill, 1992
Buku Teks
edited by Karen L. Freiberg
McGraw-Hill/Dushkin, 2001
Buku Teks
Craig, Grace J., author
Prentice-Hall, 1986
Buku Teks
Davis, Kingsley, 1908-1997, author
Macmillan, 1960
Buku Teks