Douglass maples in the Olympic Mountains, probably during autumn, Olympic National Park, date unknown

Chicago citation style
Unknown. Douglass maples in the Olympic Mountains, probably during autumn, Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1656. (Accessed June 20, 2018.)
APA citation style
Unknown, Douglass maples in the Olympic Mountains, probably during autumn, Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1656
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1656>.
Note: These citations are programmatically generated and may be incomplete.