Ferre, John P
Columbus : Charles E. Merril Publishing company,1983,
Buku Referensi
Ziegler, Kathleen, author
Rockport Publishers, 1994
Buku Referensi
Lafosse, Michael G., author
Quarry Books, 1998
Buku Referensi
Luker, Leslie G., author
Adana, 1973
Buku Teks
Drexler, Arthur
The Architectural Press, 1974
Buku Teks