Harlow, Vincent T. (Vincent Todd), 1898-1961, author
Longmans, 1964
Buku Teks
Dworkin, Ronald
Harvard University Press, 1986
Buku Teks
Griffiths, Percival, Sir, 1899-, author
Ernest Benn, 1969
Buku Teks
Ohara, Daniel T, author
Duke University Press, 2003
Buku Teks
Charlesworth, M. P., author
Oxford University Press, 1951
Buku Teks