Moyer, David S., editor
Martinus Nijhoff, 1975
Buku Teks
Hurford, James R.
Cambridge University Press, 1993
Buku Teks
Hurford, James R.
Cambridge University Press, 1983
Buku Teks
Morris, H.F
Clarendon Press Oxford, 1972
Buku Teks
Haigh, Rupert, author
Routledge-Cavendish, 2009
Buku Teks