edited by Judy Pearsall, Bill Trumble
Oxford University Press, 1995
Buku Referensi
Oxford university press , 1992
Buku Teks
edited by P. S. Falla
Clarendon Press, 1990
Buku Referensi
Smith, William George, compiler
Clarendon Press, 1952
Buku Referensi
edited by Della Thompson
Oxford University Press, 1996
Buku Referensi