Walker, David M., author
Clarendon Press, 1980
Buku Referensi
Carpenter, Humphrey, author
Oxford University Press, 1995
Buku Referensi
edited by Phyllis Hartnoll
Oxford University Press, 1951
Buku Referensi
edited by Phyllis Hartnoll and Peter Found
Oxford University Press , 1992
Buku Referensi
edited by Harold Osborne
Clarendon Press, 1970
Buku Referensi