Glacier and sheep

Chicago citation style
Roahen, Kenneth F. Glacier and sheep. Retrieved from the Digital Public Library of America, http://cdm16013.contentdm.oclc.org/cdm/ref/collection/p16013coll67/id/573. (Accessed September 19, 2020.)
APA citation style
Roahen, Kenneth F, Glacier and sheep. Retrieved from the Digital Public Library of America, http://cdm16013.contentdm.oclc.org/cdm/ref/collection/p16013coll67/id/573
MLA citation style
Roahen, Kenneth F. Retrieved from the Digital Public Library of America <http://cdm16013.contentdm.oclc.org/cdm/ref/collection/p16013coll67/id/573>.
Note: These citations are programmatically generated and may be incomplete.