Photograph of students on steps

Chicago citation style
Unknown. Photograph of students on steps. ca. 1920. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/kt2j49q775. (Accessed December 19, 2018.)
APA citation style
Unknown, (ca. 1920) Photograph of students on steps. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/kt2j49q775
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://ark.cdlib.org/ark:/13030/kt2j49q775>.
Note: These citations are programmatically generated and may be incomplete.