Woll, Peter
Constitutional democracy
Little, Brown , 1986
 Buku Teks
Powell, G. Bingham
Elections as instruments of democracy : majoritarian and proportional visions
Yale University Press, 2000
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Agresto, John
The supreme court and constitutional democracy
Cornell University Press, 1984
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Feith, Herbert
The decline of constitutional democracy in Indonesia
Cornell University Press, 1968
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Woll, Peter
Constitutional Democracy Policies and Politics
Little, Brown, 1982
 Buku Teks