Sharpe, Gareth, author
Guinness Publishing, 1994
Buku Referensi
J. K. Moorhead, Charles Lee, editor
J.M. Dent and Sons , 1932
Buku Referensi
Browning, D. C.
J.M. Dent , 1951
Buku Referensi
Wood, James, author
Warner , 1958
Buku Referensi
Stevenson, Burton Egbert, author
New York, Dodd Mead
Buku Referensi