Specification for a data descriptive file for information interchange (DDF)

Chicago citation style
United States. National Bureau of Standards. Specification for a data descriptive file for information interchange (DDF). 1986. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011394676. (Accessed December 15, 2018.)
APA citation style
United States. National Bureau of Standards, (1986) Specification for a data descriptive file for information interchange (DDF). Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011394676
MLA citation style
United States. National Bureau of Standards. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/011394676>.
Note: These citations are programmatically generated and may be incomplete.