The Clarendon Press, 1933
Buku Referensi
edited by Lesley Brown
Clarendon Press, 1993
Buku Referensi
Oxford university press , 1992
Buku Teks
Smith, William George, compiler
Clarendon Press, 1952
Buku Referensi
edited by Della Thompson
Oxford University Press, 1996
Buku Referensi