Ash flowing down reservoirs at Mount St. Helens

Chicago citation style
Zoller, William. Ash flowing down reservoirs at Mount St. Helens. 1980-04. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/57. (Accessed July 23, 2018.)
APA citation style
Zoller, William, (1980-04) Ash flowing down reservoirs at Mount St. Helens. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/57
MLA citation style
Zoller, William. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/57>.
Note: These citations are programmatically generated and may be incomplete.