Raz, Joseph
The authority of law essays on law and morality
Clarendon Press, 1979
 Buku Teks
Law, morality and society: essays in honour of H.L.A. Hart
edited by P.M.S. Hacker and J. Raz
Clarendon Press, 1988
 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
Hart, H.L.A.
Law, liberty and morality
Standford University Press, 1969
 Buku Teks