One of our automatic covering machines

Chicago citation style
One of our automatic covering machines. 1893-1920. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/nk322r55w. (Accessed July 18, 2018.)
APA citation style
(1893-1920) One of our automatic covering machines. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/nk322r55w
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/nk322r55w>.
Note: These citations are programmatically generated and may be incomplete.