Wilson, Woodrow
Constitutional government in the United States / Woodrow Wilson
Columbia University, [date of publication not identified]
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Cosgrove, John J.
Australian government : its history and how it works
Longman, 1988
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Weaver, John D.
The Great experiment / John D. Weaver
Little, Brown & Co., 1965
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Austin, Erik W.
Political facts of the united states since 1789 / Erik W. Austin
Columbia University Press, 1986
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Walker, Edward Everett, 1900-1974
Government of the United States
Charles Scribner's Sons, 1943
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