Girls sitting on a beach, possibly on the Olympic Peninsula, date unknown

Chicago citation style
Unknown. Girls sitting on a beach, possibly on the Olympic Peninsula, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/16. (Accessed July 19, 2018.)
APA citation style
Unknown, Girls sitting on a beach, possibly on the Olympic Peninsula, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/16
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/16>.
Note: These citations are programmatically generated and may be incomplete.