Yellow skunk cabbage in a stream, probably in Olympic National Park, date unknown

Chicago citation style
Unknown. Yellow skunk cabbage in a stream, 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/1939. (Accessed July 22, 2018.)
APA citation style
Unknown, Yellow skunk cabbage in a stream, 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/1939
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1939>.
Note: These citations are programmatically generated and may be incomplete.