Men working on a floor mural

Chicago citation style
Men working on a floor mural. ca. 1940. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3AAAADCD_item_4949&repo=DPLA. (Accessed December 15, 2018.)
APA citation style
(ca. 1940) Men working on a floor mural. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3AAAADCD_item_4949&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3AAAADCD_item_4949&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.