edited by Dennis Sharp
Quarto Publishing, 1991
Buku Referensi
Harris, Cyril M., author
W.W. Norton, 1998
Buku Referensi
Adolf K. Placzek, editor in chief
Free Press, 1982
Buku Referensi
Kodansha, 1993
Buku Referensi
Norwich, John Julius, editor
Oxford University Press, 1990
Buku Referensi