Maxey, Chester C.
Political philosophies
Macmillan, 1961
 Buku Teks
Political thinkers: from socrates to the present
David Boucher, Paul Kelly, editor
Oxford Univesity Press, 2009
 Buku Teks
De Wulf, Maurice
Philosophy and civilization in the middle ages / Maurice de Wulf.
Dover Publications, Inc., 1922
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Kymlicka, Will
Contemporary political philosophy: an introduction
Clarendon Press, 1990
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Clarke, M.L.
The Roman mind : studies in teh history of thought from Cicero to Marcus Aurelius / by M.L.Clarke
Harvard University Press, 1960
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