Untitled (12 students in classroom)

Chicago citation style
Untitled (12 students in classroom). 1890. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/cf95jp28g. (Accessed July 21, 2018.)
APA citation style
(1890) Untitled (12 students in classroom). Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/cf95jp28g
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/cf95jp28g>.
Note: These citations are programmatically generated and may be incomplete.