Gray ash covering the hills around Spirit Lake

Chicago citation style
Zoller, William. Gray ash covering the hills around Spirit Lake. 1981. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/43. (Accessed October 19, 2018.)
APA citation style
Zoller, William, (1981) Gray ash covering the hills around Spirit Lake. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/43
MLA citation style
Zoller, William. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/43>.
Note: These citations are programmatically generated and may be incomplete.