Boeing 247, United Airlines mail plane, ca. 1935

Chicago citation style
Boeing 247, United Airlines mail plane, ca. 1935. ca. 1935. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/transportation/id/5. (Accessed October 22, 2018.)
APA citation style
(ca. 1935) Boeing 247, United Airlines mail plane, ca. 1935. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/transportation/id/5
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/transportation/id/5>.
Note: These citations are programmatically generated and may be incomplete.