Bone, Hugh A.
American politics and the party system
McGraw-Hill, 1965
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Greenstein, Fred I.
The American party system and the American people
Prentice-Hall, 1970
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Cummings, Milton C.
Democracy under pressure: an introduction to the American political system
Harcourt Brace Jovanovich, 1977
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Cummings, Milton C.
Democracy under pressure: an introduction to the American political system
Harcourt Brace Jovanovich, 1981
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Patterson, Thomas E.
The American democracy
McGraw-Hill, 203
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