Kingston, Jeff, 1957-, author
Wiley Blackwell, 2016
Buku Teks
Cribb, Robert Bridson, author
Longman, 1995
Buku Teks
Childs, David
Methuen, 1979
Buku Teks
McWilliams, Wayne C., author
Adamantine Press, 1990
Buku Teks
Childs, David
Routledge , 1997
Buku Teks