Murphy, Walter F.
Constitutional democracy : creating and maintaining a just political order
The John Hopkins University Press, 2007
 Buku Teks SO
Burns, James McGregor
John Kennedy a political profile
Avon Book Division, 1961
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Bowle, John
Western political thought/ John Bowle
J. Cape, 1947
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Gray, John
Post-liberalism : studies in political thought / John Gray
Routledge , 1996
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Daly, L. J.
The Political theory of John Wyclif / L.J. Daly
Loyola University Press, 1962
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