Hooker, M. B.
Oxford University Press, 1984
Buku Teks
Pluvier, Jan M.
Oxford University Press, 1977
Buku Teks
London : IP Publishing Ltd
Majalah, Jurnal, Buletin
Hall, D.G.E.
Macmilan, 1955
Buku Teks
Coedes, George
Univesity of California Press, 1969
Buku Teks