Coll, Steve, 1958-
Private empire: ExxonMobil and American power / Steve Coll
Penguin Books, 2012
 Buku Teks
Judd, Dennis R.
The politics of American cities : private power and public policy
Little, Brown, 1979
 Buku Teks SO
Patterson, Thomas E.
The American democracy
McGraw-Hill, 203
 Buku Teks SO
Irish, Marian D.
The Politics of American democracy
Prentice-Hall, 1962
 Buku Teks SO
Le Boutillier, Cornelia Geer
American democracy and natural law
Columbia University Press, 1950
 Buku Teks SO