Sandstone and shale on Boulder Peak, Olympic National Park, date unknown

Chicago citation style
Tabor, R.. Sandstone and shale on Boulder Peak, Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/2463. (Accessed July 18, 2018.)
APA citation style
Tabor, R., Sandstone and shale on Boulder Peak, Olympic National Park, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/2463
MLA citation style
Tabor, R.. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/2463>.
Note: These citations are programmatically generated and may be incomplete.