Top of Mount St. Helens crater which is missing and volcanic gas clouds coming out

Chicago citation style
Zoller, William. Top of Mount St. Helens crater which is missing and volcanic gas clouds coming out. 1980-05. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/96. (Accessed June 21, 2018.)
APA citation style
Zoller, William, (1980-05) Top of Mount St. Helens crater which is missing and volcanic gas clouds coming out. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/96
MLA citation style
Zoller, William. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/mshchem/id/96>.
Note: These citations are programmatically generated and may be incomplete.