North western America showing the territory ceded by Russia to the United States

Chicago citation style
United States Coast Survey. North western America showing the territory ceded by Russia to the United States. 1867. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/4m90fb81t. (Accessed July 16, 2018.)
APA citation style
United States Coast Survey, (1867) North western America showing the territory ceded by Russia to the United States. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/4m90fb81t
MLA citation style
United States Coast Survey. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/4m90fb81t>.
Note: These citations are programmatically generated and may be incomplete.