Researchers outside an ice shaft at a glacier, Olympic National Park, date unknown

Chicago citation style
Kirk, Louie. Researchers outside an ice shaft at a glacier, Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/749. (Accessed October 17, 2018.)
APA citation style
Kirk, Louie, Researchers outside an ice shaft at a glacier, Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/749
MLA citation style
Kirk, Louie. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/749>.
Note: These citations are programmatically generated and may be incomplete.