Strong, C.F.
Modern political constitutions: an introduction to the comparative study of their history and existing forms
Sidgwick & Jackson Limited, 1960
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Easton, David
A systems analysis of political life David Easton
New York, N. Y. Wiley 1967,
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Maxey, Chester C.
Political philosophies
Macmillan, 1961
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Soehardjo
Tanya jawab ilmu negara
[publisher not identified], 1977
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Political culture and political development/ edited by Lucian W. Pye, Sidney Verba
Princeton University Press, 1967
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