Helmet, Flying, Civilian, Bernt Balchen

Chicago citation style
Helmet, Flying, Civilian, Bernt Balchen. c. 1933. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anasm_A19840377000&repo=DPLA. (Accessed November 14, 2018.)
APA citation style
(c. 1933) Helmet, Flying, Civilian, Bernt Balchen. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anasm_A19840377000&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anasm_A19840377000&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.