Evans, Robin, author
MIT Press, 1997
Buku Teks
Khan, Mofakhkhar Hussain, author
Toppan Company, 1997
Buku Referensi
edited and with an introd. by Michael Hamburger and Christopher Middleton
Grove Press, 1962
Buku Teks
Holdcroft, David
Butterworth, 1991
Buku Teks
Crowley, Tony, author
Routledge, 1996
Buku Teks