Firth, Jack, author
The Ramsay Head Press, 1979
Buku Teks
Grosser, Maurice, author
Charter Books, 1964
Buku Teks
edited by David Daiches
Edward Arnold, 1981
Buku Referensi
edited by Huw Jones
Avebury, 1996
Buku Teks
Garland Publishing, Inc, 1996
Buku Teks