Baker, Paul, author
Edinburgh University Press, 2006
Buku Referensi
M.A.K. Kalliday
Continuum, 2004
Buku Teks
Oakes, Michael P., author
Edinburgh University Press, 1998
Buku Teks
Tony McEnery, Andrew Wilson, editor
Edinburgh University Press , 2001
Buku Teks
Davies, Alan, 1931 February 17-, author
Lawrence Erlbaum Associates, 2005
Buku Referensi