Christopher Alexander, Sara Ishikawa, Murray Silverstein, Max Jacobson, Ingrid Fiksdahl-King, Sholomo Angel
Oxford University Press, 1977
Buku Referensi
Douglas, Dan
Cambridge University Press, 2000
Buku Teks
Revesz, G.
Longman, 1956
Buku Teks SO
Artikel Jurnal
Crowley, Tony
Routledge, 1996
Buku Teks SO