Sniderman, Paul M
University of California Press, 1981
Buku Teks
Flacks, Richard
Columbia University Press, 1988
Buku Teks
Ross VeLure Roholt, R.W. Hildreth, Michael Baizerman, editor
Routledge, 2009
Buku Teks
Lewis, Sherman, author
Duxbury Press, 1980
Buku Teks
Dionne, E. J., Jr., author
St. Martin's Press, 2017
Buku Teks