Sketches of ducks

Chicago citation style
McCloskey, Robert, 1914-2003. Sketches of ducks. 1939-1940. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/n296wz62t. (Accessed June 22, 2018.)
APA citation style
McCloskey, Robert, 1914-2003, (1939-1940) Sketches of ducks. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/n296wz62t
MLA citation style
McCloskey, Robert, 1914-2003. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/n296wz62t>.
Note: These citations are programmatically generated and may be incomplete.