Mazumder, S.K.
McGraw-Hill Publishing Company, 1983
Buku Teks
Smith, Stephen W., author
John Wiley & Sons, 1997
Buku Teks
Leliavsky, Serge
London: Chapman and Hall, 1960
Buku Teks
Kaur, Amajit
Centre for South-East Asian Studies , 1992
Buku Teks
Kay, Melvyn
Language Book Society , 1983
Buku Teks