Smith, John E., author
Yayasan Sumber Agung , 1995
Buku Teks
Bradbrook, M.C. (Muriel Clara), 1909-1993, author
Cambridge University Press, 1980
Buku Teks
Gaunt, William, author
Jonathan Cape, 1948
Buku Teks
Reck, Andrew J.
Pantheon Books, 1964
Buku Teks
Kymlicka, Will, author
Clarendon Press, 1990
Buku Teks