Mercators chart

Chicago citation style
Sargent, Catharine. Mercators chart. 1791. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/x633f9693. (Accessed June 20, 2018.)
APA citation style
Sargent, Catharine, (1791) Mercators chart. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/x633f9693
MLA citation style
Sargent, Catharine. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/x633f9693>.
Note: These citations are programmatically generated and may be incomplete.