Helicopter shelter

Chicago citation style
Helicopter shelter. 1951-1984. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/zk51zt26q. (Accessed June 21, 2018.)
APA citation style
(1951-1984) Helicopter shelter. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/zk51zt26q
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/zk51zt26q>.
Note: These citations are programmatically generated and may be incomplete.