Hodges, Peter, author
Aris & Phillips, 1993
Buku Referensi
Les Ruddock, editor
Taylor and Francis, 2009
Buku Teks
Stewart, David.
BBC Worldwide Limited, 2004
Multimedia
Stewart, David.
BBC Worldwide Limited, 2004
Multimedia
Fewings, Peter, author
Taylor and Francis, 2009
Buku Teks