Morley-Fletcher, Hugo, editor
Chartwell Book, 1997
Buku Referensi
Rose, H.J.
Hutchinson's University Library , [date of publication not identified]
Buku Teks
Berry, George Ricker, author
Chicago, Fallet Publishing, 1962
Buku Referensi
Cosentino, Peter
Pageone , 2003
Buku Referensi
Gomperz, Theodor, author
John Murray , 1955
Buku Teks