Hobbes, Thomas
Broadview Literary Texts , 2002
Buku Teks SO
Finnis, John
Oxford Univesity Press, 2011
Buku Teks SO
Buku Teks
Le Boutillier, Cornelia Geer
Columbia University Press, 1950
Buku Teks SO
Weinreb, Lloyd L.
Harvard University Press, 1987
Buku Teks