Billings Business College, Dictaphone dictating machine class

Chicago citation style
Unknown. Billings Business College, Dictaphone dictating machine class. 1935. Retrieved from the Digital Public Library of America, http://cdm16013.contentdm.oclc.org/cdm/ref/collection/p16013coll53/id/149. (Accessed August 7, 2020.)
APA citation style
Unknown, (1935) Billings Business College, Dictaphone dictating machine class. Retrieved from the Digital Public Library of America, http://cdm16013.contentdm.oclc.org/cdm/ref/collection/p16013coll53/id/149
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://cdm16013.contentdm.oclc.org/cdm/ref/collection/p16013coll53/id/149>.
Note: These citations are programmatically generated and may be incomplete.