Ice obtained through ice coring on Snow Dome, Mount Olympus, Olympic National Park, date unknown

Chicago citation style
Sharpe, Fred. Ice obtained through ice coring on Snow Dome, Mount Olympus, Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/842. (Accessed April 25, 2018.)
APA citation style
Sharpe, Fred, Ice obtained through ice coring on Snow Dome, Mount Olympus, Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/842
MLA citation style
Sharpe, Fred. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/842>.
Note: These citations are programmatically generated and may be incomplete.