Cambridge University Press, 2006
eBooks
Danuta Gabrys-Barker
Springer, 2012
eBooks
Langacker, Ronald W., author
Harcourt, Brace & World, 1968
Buku Teks
Vachek, Josef, author
Indiana University Press, 1966
Buku Teks
Geoffrey, Leech N., author
Longmans, 1993
Buku Teks