Design concepts, vacuum formed plastic, extruded plastic, closed cell foam

Chicago citation style
Design concepts, vacuum formed plastic, extruded plastic, closed cell foam. 1971-03-24. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/zk51wh346. (Accessed June 18, 2018.)
APA citation style
(1971-03-24) Design concepts, vacuum formed plastic, extruded plastic, closed cell foam. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/zk51wh346
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/zk51wh346>.
Note: These citations are programmatically generated and may be incomplete.