Dorling Kindersley, 1998
Multimedia
Honour, Hugh, author
Laurence King Publishing, 1995
Buku Referensi
Fuller, John Frederick Charles, author
Funk and Wagnalls, 1955
Buku Teks
Reichold, Klaus, author
Prestel, 2004
Buku Teks
Wells, H.G., author
Macmillan, 1922
Buku Teks