Alexander Abdullah
Filsafat hukum menurut H.L.A. Hart
Program Pascasarjana Universitas Indonesia, 2003
 Artikel Jurnal
Lacey, Nicola
A life of H.L.A. Hart : the nightmare and the noble dream
Oxford University Press, 2006
 Buku Teks
Fuller, Lon L.
The morality of law
Yale University Press, 1964
 Buku Teks
Fuller, Lon L.
The morality of law
Yale University Press, 1974
 Buku Teks
Callahan, Daniel
Abortion : law, choice & morality
Collier-Macmillan, 1970
 Buku Teks