Appel, René
Amsterdam Academic Archive, 2005
Buku Teks
Raymond Hickey, editor
Wiley-Blackwell, 2010
Buku Teks
Drinka, Bridget, 1951-.
Cambridge University Press, 2017
Buku Teks
Cambridge University Press, 2010
eBooks
Hunston, Susan
Cambridge University Press,, 2006
Buku Teks