Eroded rock with concretions on the Washington coast, probably in Olympic National Park, date unknown

Chicago citation style
Gurling, Mike. Eroded rock with concretions on the Washington coast, 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/1914. (Accessed October 17, 2018.)
APA citation style
Gurling, Mike, Eroded rock with concretions on the Washington coast, 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/1914
MLA citation style
Gurling, Mike. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1914>.
Note: These citations are programmatically generated and may be incomplete.