Curzon, L.B.
Cavendish Publishing, 1992
Buku Teks
Simmonds, N.E.
Sweet & Maxwell, 1986
Buku Teks
Dentreves, A.P.
Hutchinson`s University Library, 1951
Buku Teks
Sinha, Surya Prakash
West Pub. Co., 1993
Buku Teks
edited by R.M. Dworkin
Oxford University Press, 1977
Buku Teks