Untitled - interior - boys & girls exercising in classroom

Chicago citation style
Untitled - interior - boys & girls exercising in classroom. 1892-1893. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/cf95jn929. (Accessed July 21, 2018.)
APA citation style
(1892-1893) Untitled - interior - boys & girls exercising in classroom. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/cf95jn929
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/cf95jn929>.
Note: These citations are programmatically generated and may be incomplete.