Makkink, H.J., author
Nijgh and Van Ditmar, 1951
Buku Teks
Purpura, James E, author
Cambridge University Press, 2004
eBooks
Healy, Phyllis M., author
The Institute of Nationale Language and The Summer Institute Linguistics, 1960
Buku Teks
Winstedt, Richard, 1878-1966, author
Clarendon Press, 1952
Buku Teks
Billington, Michael, author
Macmillan, 1990
Buku Teks