Valves and hoses

Chicago citation style
Valves and hoses. 1984. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/zk51xs68v. (Accessed June 25, 2018.)
APA citation style
(1984) Valves and hoses. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/zk51xs68v
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/zk51xs68v>.
Note: These citations are programmatically generated and may be incomplete.