Bear, Gerg
Legend, 1992
Buku Teks
Aaron, David, author
Pan Books, 1989
Buku Teks
Budden, John
Longmans, Green and Co., 1951
Buku Teks
Cox, Alwyn
Dian Rakyat, [date of publication not identified]
Buku Teks
Sheridan, R. B.
Longmans, Green and Co., 1948
Buku Teks