Map of a portion of the Sierra Nevada adjacent to the Yosemite Valley

Chicago citation style
Geological Survey of California. Map of a portion of the Sierra Nevada adjacent to the Yosemite Valley. 1870. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/4m90fc544. (Accessed June 18, 2018.)
APA citation style
Geological Survey of California, (1870) Map of a portion of the Sierra Nevada adjacent to the Yosemite Valley. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/4m90fc544
MLA citation style
Geological Survey of California. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/4m90fc544>.
Note: These citations are programmatically generated and may be incomplete.