Harrigan, John J.
Politics and the American future
Little, Brown, 1984
 Buku Teks SO
Dye, Thomas R.
Politics in States and Communities/ Thomas R. Dye
Prentice-Hall, 1988
 Buku Teks SO
Saywell, John J.
The office of lieutenant-governor : a study in Canadian Government and politics / by John J. Saywell
University of Toronto Press , 1957
 Buku Teks
Palumbo, Dennis J.
Public policy in America : government in action
Harcourt Brace College, 1994
 Buku Teks SO
Laski, Harold J.
An introduction to politics
George Allen and Unwin, 1960
 Buku Teks SO