Collie, Joanne, author
Cambridge University Press, 1990
Buku Teks
Collie, Joanne, author
Cambridge University Press, 1987
Buku Teks
Maley, Alan, 1937-, author
Cambrigde University Press, 1994
Buku Teks
McEnery, Tony, 1964-, author
Routledge, 2010
Buku Teks
Bot, Kees de, author
Routledge , 2005
Buku Teks