Graburn, Nelson
Harper & Row, Publishers, 1971
Buku Teks
edited by John T. Jost and Jim Sidanius
Psychology Press, 2004
Buku Teks
James Farganis
MacGraw-Hill, 2000
Buku Teks
edited by George W. Albee, Justin M. Joffe, and Linda A. Dusenbury
Sage, 1988
Buku Teks
Quadagno, Jill S., author
St. Martin's Press, 1980
Buku Teks