An explanation of the Superintendent of Documents classification system /

Chicago citation style
United States. Superintendent of Documents. Library. An explanation of the Superintendent of Documents classification system /. 1963. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/102290995. (Accessed November 16, 2018.)
APA citation style
United States. Superintendent of Documents. Library, (1963) An explanation of the Superintendent of Documents classification system /. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/102290995
MLA citation style
United States. Superintendent of Documents. Library. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/102290995>.
Note: These citations are programmatically generated and may be incomplete.