Poutsma, H.
P. Noordhoff, 1922
Buku Teks
edited by Tim Storrie and James Matson
Cassell , 1991
Buku Teks
Makkink, H.J., author
Nijgh and Van Ditmar, 1951
Buku Teks
Newby, Michael, author
Cambridge University Press, 1988
Buku Teks
House, C. Homer, author
Prentice-Hall, 1950
Buku Teks