Sedimentary rock in the Olympic Mountains, Olympic National Park, date unknown

Chicago citation style
Unknown. Sedimentary rock 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/1609. (Accessed October 23, 2018.)
APA citation style
Unknown, Sedimentary rock 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/1609
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1609>.
Note: These citations are programmatically generated and may be incomplete.