Montgomery, B.
The Word Publishing Comp, [Date of publication not identified]
Buku Teks
Gunung Agung, 1981
Buku Teks
Slavia Publishers, 1978
Buku Teks
Singapore University Press, 1970
Buku Teks
edited by R.J .Wilkinson
Oxford University Press, 1971
Buku Teks