Thody, Philip, author
Routledge, 2000
Buku Teks
Kingston, Jeff, 1957-, author
Wiley Blackwell, 2016
Buku Teks
Carver, Michael
Putnam, 1981
Buku Teks
Cribb, Robert Bridson, author
Longman, 1995
Buku Teks
Milton-Edwards, Beverly, author
Routledge, 2003
Buku Teks