Cleese, John
BBC Worldwide Limited, 2003
Multimedia
Wilson, Kathleen J. W.
Churchill livingstone, 1998
Buku Teks
Adams media Corporation, 1996
Multimedia
Manocchia, Pat, author
Hinkler Books, 2011
Buku Referensi
Browne, Harry, author
Arlington House , 1971
Buku Teks