1981 eruption as witnessed from inside of crater

Chicago citation style
Zoller, William. 1981 eruption as witnessed from inside of crater. 1981. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/71. (Accessed September 24, 2018.)
APA citation style
Zoller, William, (1981) 1981 eruption as witnessed from inside of crater. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/71
MLA citation style
Zoller, William. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/71>.
Note: These citations are programmatically generated and may be incomplete.