edited by Gabriel A. Almond, James S. Coleman
Princeton University Press, 1960
Buku Teks
Strong, C. F., author
Nuansa, 2004
Buku Teks
Maitland-Jones, J.F., author
W.W. Norton, 1974
Buku Teks
Little, Brown , 1970
Buku Teks
Meehan, Eugene J.
McGraw-Hill, 1966
Buku Teks