Sussman, Barry
Great cover up Nixon and the scandal of Watergate
New American Library, 1974
Buku Teks
Political crime in contemporary America: a critical approach/edited by Kenneth D. Tunnell
Garland , 1993
Buku Teks
Bock, Edwin A.
Case studies in American government the inter-University case program edited by and
London Prentice-Hall 1962
Buku Teks
Mathias, L.L.
Etdeckung Amerikas anno 1953
Hamburg Rowohlt 1953
Buku Teks
Griffith, Ernest S.
The America system of goverment
London Methuen & Co. 1967,
Buku Teks