Pillow lava on Hurricane Ridge, Olympic National Park, date unknown

Chicago citation style
Pillow lava on Hurricane Ridge, Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1699. (Accessed June 21, 2018.)
APA citation style
Pillow lava on Hurricane Ridge, Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1699
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1699>.
Note: These citations are programmatically generated and may be incomplete.