Said, Suzanne, author
Routledge, 1999
Buku Teks
Blamires, Harry, author
Routledge, 1994
Buku Teks
edited by Peter Hunt
Oxford University Press , 1995
Buku Teks
edited by Peter Hunt
Oxford University Press, 1995
Buku Referensi
Evans, Ifor, Sir, author
Penguin Books, 1960
Buku Teks