Hollerith punched card code : category, Hardware standard; subcategory, interchange codes and media

Chicago citation style
United States. National Bureau of Standards. Hollerith punched card code : category, Hardware standard; subcategory, interchange codes and media. [1980]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011394591. (Accessed December 10, 2018.)
APA citation style
United States. National Bureau of Standards, ([1980]) Hollerith punched card code : category, Hardware standard; subcategory, interchange codes and media. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011394591
MLA citation style
United States. National Bureau of Standards. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/011394591>.
Note: These citations are programmatically generated and may be incomplete.