Miller, Herman Phillip, author
Income of the American people
John Wiley & Sons, 1955
 Buku Teks
Our American government / U.S. Government
U.S. Goverment, 2003
 Buku Teks
Schubert, Glendon, author
The constitutional polity
Boston University Press, 1970
 Buku Teks
Hasluck, Paul, author
The Government and the people 1939-1941
Australian War Memorial, 1952
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Welch, Susan author
Understanding American government
Wadsworth/Cengage learning, 2010
 Buku Teks
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