Finnis, John
Oxford Univesity Press, 2011
Buku Teks SO
Kluwer Law & Taxation Publishers, 1994
Buku Teks
Liu, Athena
Dartmouth, 1991
Buku Teks SO
Nino, Carlos Santiago
Oxford University Press, 1993
Buku Teks SO
Fuller, Lon L.
Yale University Press, 1974
Buku Teks SO