Roland Koepf student drawing of a crematory

Chicago citation style
Koepf, Roland. Roland Koepf student drawing of a crematory. circa 1932. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ac/id/1930. (Accessed October 19, 2018.)
APA citation style
Koepf, Roland, (circa 1932) Roland Koepf student drawing of a crematory. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ac/id/1930
MLA citation style
Koepf, Roland. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ac/id/1930>.
Note: These citations are programmatically generated and may be incomplete.