Portman, John, author
L`Arca, 1997
Buku Teks
Lee, Storrs W., author
Holt, Rinehart, 1966
Buku Teks
Kefala, Antigone, author
Hale & Iremonger, 1984
Buku Teks
Bahn, Paul, author
Thames and Hudson , 1992
Buku Teks
Covarrubias, Miguel, author
Oxford University Press, 1972
Buku Teks