American democracy institutions, politics, and policies
by William J. Keefe ... [and others]
The Dorsey Press, 1983
 Buku Teks
Woll, Peter
Constitutional democracy
Little, Brown , 1986
 Buku Teks
Agresto, John
The supreme court and constitutional democracy
Cornell University Press, 1984
 Buku Teks
Feith, Herbert
The decline of constitutional democracy in Indonesia
Cornell University Press, 1968
 Buku Teks
Feith, Herbert
The decline of constitutional democracy in Indonesia
Equinox, 2007
 Buku Teks