O`Neill, William L., author
The progressive years : America comes of age
Harper & Row Publishers, 1975
 Buku Teks
Soros, George, author
The age of fallibility : the consequences of the war on terror
Public Affairs, 2006
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Shea, John C.
American government: the great game of politics
St. Martin's Press, 1984
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Barners, Harry Elmer
Society in transition: problems of a changing age / by Harry Elmer Barners
Prentice-Hall, 1940
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May, Ernest R.
War, boom and bust / Ernest R. May
Time-Life Book, 1969
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