Lees, Stella, author
Oxford University Press, 1993
Buku Referensi
edited by M.C. Howatson and Ian Chilvers
Oxford University Press, 1993
Buku Referensi
edited by Peter France
Clarendon Press, 1995
Buku Referensi
Kennedy, Michael
Oxford University Press, 1994
Buku Referensi
Hart, James, author
Oxford University Press, 1948
Buku Teks