Wilde, William H.
Oxford University Press, 1994
Buku Referensi
Carpenter, Humphrey
Oxford University Press, 1995
Buku Referensi
Johson, Bruce
Oxford University Press, 1987
Buku Teks SO
edited by Margaret Drabble
Oxford University Press, 1985
Buku Referensi
edited by Philip Ward
Clarendon Press, 1978
Buku Referensi