Crystal, David, 1941-, author
Cambridge University Press, 1997
Buku Referensi
Gutteridge, Anne C.
Cambridge University Press, 1983
Buku Referensi
edited by James Crawford and Martti Koskenniemi
Cambridge University Press, 2012
Buku Teks
Keith Allan and Kasia M. Jaszczolt, editors
Cambridge University Press, 2012
Buku Teks
edited by Keith Allan and Kasia M. Jaszczolt
Cambridge University Press, 2012
Buku Referensi