Zoo

Chicago citation style
Zoo. Retrieved from the Digital Public Library of America, http://digitalcollections.philau.edu/cdm/ref/collection/postcards/id/3700. (Accessed December 16, 2018.)
APA citation style
Zoo. Retrieved from the Digital Public Library of America, http://digitalcollections.philau.edu/cdm/ref/collection/postcards/id/3700
MLA citation style
Retrieved from the Digital Public Library of America <http://digitalcollections.philau.edu/cdm/ref/collection/postcards/id/3700>.
Note: These citations are programmatically generated and may be incomplete.