McCredden, Lyn
Oxford University, 1992
Buku Teks
University of Queensland Press, 1988
Buku Teks
Swan, Michael, author
Longmans Green, 1969
Buku Teks
Tanner, Tony, author
Longman Group, 1979
Buku Teks
Tanner, Tony, author
Profile Books, 1981
Buku Teks