Huntington, Samuel P.
American politics
The Belknap Press, 1981
 Buku Teks
McCarthy, Eugene J., 1916-2005
The Cresent Dictionary of American Politics
Macmillan, 1962
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Latin American politics and development
edited by Howard J. Wiarda, Harvey F. Kline
Westview Press, 2007
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Sharkansky, Ira
Policy and politics in American governments
McGraw-Hill, 1975
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Huntington, Samuel P.
American politics : the promise of disharmony
The Belknap Press, 1981
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