Trees laid flat by eruption

Chicago citation style
Zoller, William. Trees laid flat by eruption. 1980-04. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/99. (Accessed July 18, 2018.)
APA citation style
Zoller, William, (1980-04) Trees laid flat by eruption. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/99
MLA citation style
Zoller, William. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/99>.
Note: These citations are programmatically generated and may be incomplete.