Rommen, Heinrich A.
The natural law a study in legal and social history and philosophy
Liberty Fund Indianapolis, 1998
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Entreves, A.P.D
Natural law an introduction to legal philosphy
Hutchinson of London, 1970
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Maris, Cees
Law, order and freedom : a historical introduction to legal philosophy
Springer, 2011
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Maritain, Jacques, 1882-1973
An introduction to philosophy
Rowman &​ Littlefield Publishers, 2005
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Hales, Steven D.
This is philosophy: an introduction
Wiley Balckwell, 2013
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