"Three stages of architecture"

Chicago citation style
Falk, Jon. "Three stages of architecture". 1978-06-18. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/38359. (Accessed December 14, 2018.)
APA citation style
Falk, Jon, (1978-06-18) "Three stages of architecture". Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/38359
MLA citation style
Falk, Jon. Retrieved from the Digital Public Library of America <http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/38359>.
Note: These citations are programmatically generated and may be incomplete.