Fossils, probably in Olympic National Park, date unknown

Chicago citation style
Unknown. Fossils, probably in Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1585. (Accessed September 21, 2018.)
APA citation style
Unknown, Fossils, probably in Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1585
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1585>.
Note: These citations are programmatically generated and may be incomplete.