Four boys - three pushing a barrel, one riding on top of it

Chicago citation style
Four boys - three pushing a barrel, one riding on top of it. 1870-1900. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/pz50hb518. (Accessed June 24, 2018.)
APA citation style
(1870-1900) Four boys - three pushing a barrel, one riding on top of it. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/pz50hb518
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/pz50hb518>.
Note: These citations are programmatically generated and may be incomplete.