Burckhardt, Jacob, author
Harper & Row Publisher, 1958.
Buku Teks
Durant, Will, author
Simon and Schuster, 1953
Buku Teks
Richard J. Goy
Phaidon, 2002
Buku Teks
ENIT, [date of publication not identified]
Buku Teks
Vitzthum, Walter, author
Fratelli Fabbri Editori , 1971
Buku Referensi