Glacial cirque in the Olympic Mountains, Olympic National Park, date unknown

Chicago citation style
Unknown. Glacial cirque in the Olympic Mountains, Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/982. (Accessed July 16, 2018.)
APA citation style
Unknown, Glacial cirque in the Olympic Mountains, Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/982
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/982>.
Note: These citations are programmatically generated and may be incomplete.