Raymond Hickey, editor
Wiley-Blackwell, 2010
Buku Teks
edited by Nikolas Coupland
Wiley-Blackwell, 2010
Buku Teks
Appel, René, author
Amsterdam Academic Archive, 2005
Buku Teks
Drinka, Bridget, 1951-, author.
Cambridge University Press, 2017
Buku Teks
Winford, Donald, author
Blackwell Publishing, 2003
Buku Teks