Plan to illustrate the situation of the principal hills of ancient Rome

Chicago citation style
Smith, Charles, fl. 1799-1852. Plan to illustrate the situation of the principal hills of ancient Rome. 1821. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/st74cw18f. (Accessed July 16, 2018.)
APA citation style
Smith, Charles, fl. 1799-1852, (1821) Plan to illustrate the situation of the principal hills of ancient Rome. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/st74cw18f
MLA citation style
Smith, Charles, fl. 1799-1852. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/st74cw18f>.
Note: These citations are programmatically generated and may be incomplete.