Fowler, H. W. (Henry Watson), 1858-1933, author
New York Oxford University Press 1965
Buku Referensi
Chapman, Robert L., author
London Pan Books 1988
Buku Referensi
Macdonell, Arthur Anthony, 1854-1930, author
London Oxford University Press 1924
Buku Referensi
Lewis, Charlton T., author
New York American Book 1918
Buku Referensi
edited by. Frank Gaynor
New York, Philosophical library, 1951
Buku Referensi