Cummings, Milton C.
Democracy under pressure: an introduction to the American political system
Harcourt Brace Jovanovich, 1977
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Points of view : readings in American government and politics
Robert E. Diclerico, Allan S. Hammock, editor
McGraw-Hill, 2009
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Irish, Marian D.
The Politics of American democracy
Prentice-Hall, 1962
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Sayre, Wallace S.
American government
Barnes & Noble, 1964
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Posey, Rollin Bennett
American government
Littlefield, Adam, 1958
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