Helmets, side view

Chicago citation style
Helmets, side view. 1979. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/nz808x71b. (Accessed July 22, 2018.)
APA citation style
(1979) Helmets, side view. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/nz808x71b
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/nz808x71b>.
Note: These citations are programmatically generated and may be incomplete.