Coulmas, Florian, author
Blackwell Publishers, 1998
Buku Teks
Mesthrie, Rajend, editor
Cambridge University Press, 2011
eBooks
Rajend Mesthrie, editor
Cambridge University Press, 2011
Buku Teks
Juan Manuel Hernandez-Campoy, editor; Juan Camilo Conde-Silvestre, editor
Wiley-Blackwell, 2012
Buku Teks
Hudson, R. A., author
Cambridge , 1980
Buku Teks