Corwin, Edward S.
New York University Press, 1956
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Rossiter, Clinton, 1917-1970
American Library Association, 1960
Buku Teks SO
Gaines, William C.
Institute Studi Arus Informasi, 2007
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Michael Nelson
COP Press, 2000
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by Bradley D. Nash with Milton S. Eisenhower, R. Gordon Hoxie, and William C. Spragens
Center for the study of the Presidency, 1980
Buku Teks SO