Norberg-Schultz, Christian, author
Praeger, 1975
Buku Teks
Rhodes, Robin Francis, author
Cambridge University Press, 1995
Buku Teks
Edited by Laura S. Etheredge
Britannica Educational Pub. in association with Rosen Educational Services, 2010
Buku Teks
Snyder, Louis L., author
D. Van Nostrand Company, 1958
Buku Teks
Buku Teks