Hornstein, Norbert, author
MIT Press, 1990
Buku Teks
Lyons, John, author
Cambridge University Press, 1991
eBooks
Comrie, Bernard, 1947-, author
Cambridge University Press, 1985
Buku Teks
Cook, V. J.
Blackwell, 1997
Buku Teks
Cambridge University Press, 2006
eBooks