Palmate butterbur flowers, probably in Olympic National Park, date unknown

Chicago citation style
Unknown. Palmate butterbur flowers, 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/1998. (Accessed June 24, 2018.)
APA citation style
Unknown, Palmate butterbur flowers, 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/1998
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/1998>.
Note: These citations are programmatically generated and may be incomplete.