Friedrich, Carl J.
Constitutional government and democracy theory and practice in Europe and America
Blaisdell, 1949
 Buku Teks
Bernstein, Marver H.
American democracy in theory and practice the national government
Holt, Rinehart and Winston, 1960
 Buku Teks
Carr, Robert K.
American democracy in theory and practice : essentials of national, state, and local government
Rinehart, 1957
 Buku Teks
American democracy in theory and practice: national, state and local government
by Robert K. Carr ... [and others]
Holt, Rinehart and Winston, 1961
 Buku Teks
Janda, Kenneth
The challenge of democracy : government in America 1999-2000 update
Houghton Mifflin, 2000
 Buku Teks