Views of the National Zoological Park in Washington, DC, showing Polar Bears

Chicago citation style
Gruber, Martin A. Views of the National Zoological Park in Washington, DC, showing Polar Bears. 1919. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_292039&repo=DPLA. (Accessed November 13, 2018.)
APA citation style
Gruber, Martin A, (1919) Views of the National Zoological Park in Washington, DC, showing Polar Bears. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_292039&repo=DPLA
MLA citation style
Gruber, Martin A. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_292039&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.