Joy Hakim
Freedom A History of US
Oxford University Press, 2003
 Buku Teks
Bury, J.B.
A history of freedom of thught
Oxforkd Univ.Press, 1952
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Trigger, Bruce G.
A history of archaeological thought
Cambridge University Press, 2006
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Essays in the history of political thought
edited by Isaac Kramnick
[publisher not identified], 1969
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Wanlass, Lawrence C.
Gettell's history of political thought
Appleton-Century-Crofts, 1953
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