Finnis, John
Natural law and natural rights
Oxford Univesity Press, 2011
 Buku Teks
Maritain, Facques
The rights of man and natural law
Charles Scribner's Son's, 1943
 Buku Teks
Le Boutillier, Cornelia Geer
American democracy and natural law
Columbia University Press, 1950
 Buku Teks
Dentreves, A.P.
Natural law : an introduction to legal philosophy
Hutchinson`s University Library, 1951
 Buku Teks
Anderson, Owen J.
The natural moral law : the good after modernity
Cambridge University Press, 2012
 Buku Teks