Cummings, Milton C.
Democracy under pressure: an introduction to the American political system
Harcourt Brace Jovanovich, 1977
 Buku Teks SO
Irish, Marian D.
The Politics of American democracy
Prentice-Hall, 1962
 Buku Teks SO
Posey, Rollin Bennett
American government
Littlefield, Adam, 1958
 Buku Teks SO
Ferguson, John H.
The American system of government
McGraw-Hill, 1981
 Buku Teks SO
American government: origins, institutions, & public policy
by James W. Ceaser ... [and others]
McGraw-Hill, 1984
 Buku Teks SO