Roof of General Mills Flour Mill. Chicago, Illinois (C-183-921)
MLA
Plowden, David. Roof of General Mills Flour Mill. Chicago, Illinois (C-183-921). 1983. https://collections.library.yale.edu/catalog/2038468.
APA, 6th edition
Plowden, D. (1983). Roof of General Mills Flour Mill. Chicago, Illinois (C-183-921). https://collections.library.yale.edu/catalog/2038468.