Gosse Bouma, editor
[, Springer-Verlag], 2012
eBooks
Lyons, John, author
Cambridge University Press, 1991
Buku Teks
Willis, Dave, author
Cambridge University Press, 2003
Buku Teks
Keegel, John C.
Regents Publishing Company, 1976
Buku Teks
Makkink, H.J., author
Nijgh and Van Ditmar, 1951
Buku Teks