Hooker, M. B., author
Malaya Law Review, 1967
Buku Teks
Plucknett, Theodore F. T.
Little, Brown and Company, 1956
Buku Teks
Holmes, Oliver Wendell, Jr.
Little, Brown and Company, 1951
Buku Teks
Chan, Wing-Tsit, author
Princeton University Press, 1963
Buku Teks
Kahn-Freund, Otto, 1900-1979, author
Clarendon Press, 1991
Buku Teks