Yeric, Jerry L.
Public opinion : the visible politics / Jerry L. Yeric, John R. Todd
F.E. Peacock Publishers, 1983
 Buku Teks
Roll, Charles W.
Polls, their use and misuse in politics / Charles W. Roll, Jr. & Albert H. Cantril
Seven Locks Press, 1980
 Buku Teks
American capitalism : social thought and political economy in the twetieth century
edited by Nelson Lichtenstein
University of Pennsylvania press, 2006
 Buku Teks
Burlingame, Roger
The American conscience / Roger Burlingame
Alfred A. Knopf, 1960
 Buku Teks
Carr, Robert K.
American democracy in theory and practice : essentials of national, state, and local government
Rinehart, 1957
 Buku Teks