Burns, James McGregor
The Deadlock of democracy: four-party politcs in America
Prentice-Hall, 1963
 Buku Teks SO
Sorauf
Party politics in America / Sorauf
Little, Brown and Company, 1980
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Lieuwen, Edwin
Arms and politics in latin america
Frederick A. Praeger, 1960
 Buku Teks SO
Cqs politics in America 2004
CQ Press, 2003
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Bailey, Stephen K.
America politics and goverment
Voice of America Forum Lectures, 1956
 Buku Teks