Jones, Mari C, author
Routledge , 2006
Buku Teks
Aitchison, Jean, 1938-, author
Cambridge University Press, 2013
Buku Teks
Aitchison, Jean, 1938-, author
Cambridge University Press, 2001
Buku Teks
Keller, Rudi
Routledge, 1994
Buku Teks
Heine, Bernd, author
Cambridge University Press, 2005
Buku Teks