Levine, Neil
Princeton University Press, 1996
Buku Teks SO
edited by David Larkin and Bruce Brooks Pfeiffer
Rizzoli in association with the Frank Lloyd Wright Foundation, 1993
Buku Referensi
Laseau, Paul
Van Nostrand Reinhold, 1992
Buku Teks SO
Nute, Kevin
Van Nostrand Reinhold, 1993
Buku Teks SO
Kaufmann, Edgar
[T.t.] Horizon Press 1960
Buku Teks