Grimes, Charles E.
Australian National University, 1987
Buku Teks
UNHAS-SIL , 1990
Buku Teks
Key, Mary Ritchie, author
Tubingen Gunter Narr Verlag 1979
Buku Teks
Noorduyn, J.
KITLV Press, 1991
Buku Teks
Mortimer, Charles E.
Publishing, 1983
Buku Teks