opp2-2a

Chicago citation style
opp2-2a. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/1180. (Accessed October 22, 2018.)
APA citation style
opp2-2a. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/1180
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/1180>.
Note: These citations are programmatically generated and may be incomplete.