Iyer, Nandhini
ABC Publishing House , 1985
Buku Teks
Gunn, Geoffrey C.
Boulder Westview Press 1990,
Buku Teks
Anton Tabah, author
Klaten Sahabat 2000,
Buku Teks
Williams, E.N., author
Penguin Books, 1970
Buku Teks
Byvank, AW
Leiden J Brill 1947-1949
Buku Teks