Legibility of alphanumeric characters and other symbols

Chicago citation style
United States. National Bureau of Standards. Legibility of alphanumeric characters and other symbols. 1964-67. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011394808. (Accessed December 13, 2018.)
APA citation style
United States. National Bureau of Standards, (1964-67) Legibility of alphanumeric characters and other symbols. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011394808
MLA citation style
United States. National Bureau of Standards. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/011394808>.
Note: These citations are programmatically generated and may be incomplete.