Chafe, William Henry
The unfinished journey : America since World War II / William H. Chafe
Oxford University Press, 1995
 Buku Teks
Wiebe, Robert H.
Businessmen and reform a study of the progressive movement / Robert H. Wiebe
Harvart University Press , 1962
 Buku Teks
Bailey, Stephen K.
Government in America
Henry Holt, 1957
 Buku Teks
Smith, Hedrick
The power game: how Washington works / Hendrick Smith
Ballantine Books, 1988
 Buku Teks
Moore, John A.
The pursuit of happiness: goverment and politics in America
Macmillan, 1985
 Buku Teks