American democracy in theory and practice: national, state and local government
by Robert K. Carr ... [and others]
Holt, Rinehart and Winston, 1961
 Buku Teks
Bernstein, Marver H.
American democracy in theory and practice the national government
Holt, Rinehart and Winston, 1960
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McKenna, George
The drama of democracy: American government and politics
McGraw-Hill, 1998
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Geer, John Gray
Gateways to democracy: an introduction to American government
Wadsworth and Cengage Learning, 2012
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State and local government
edited by Herbert L. Marx
H.W. Wilson, 1962
 Buku Teks