Middleton, Neil, author
Pluto Press, 1993
Buku Teks
edited by Frances Stewart, Ruhi Saith, Barbara Harriss-White
Palgrave Macmillan, 2007
Buku Teks
Morley, David, 1964-, author
Butterworth, 1975
Buku Teks
Grosvenor Press, 1986
Buku Teks
Publication No.55 , 1995
Buku Teks