Cross, Rod
Martin Robertson , 1982
Buku Teks
Sullivan, Michael, author
Harvester Wheatsheaf, 1994
Buku Teks
edited by Helen Jones and Susane Macgregor
Routledge, 1998
Buku Teks
Routledge, 1998
Buku Teks
edited by Tony Buxton, Paul Chapman and Paul Temple
Routledge , 1994
Buku Teks