Guideline for standard occupational classification (SOC) codes : category--data standards and guidelines, subcategory--representations and codes

Chicago citation style
United States. National Bureau of Standards. Guideline for standard occupational classification (SOC) codes : category--data standards and guidelines, subcategory--representations and codes. 1983. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011394557. (Accessed December 17, 2018.)
APA citation style
United States. National Bureau of Standards, (1983) Guideline for standard occupational classification (SOC) codes : category--data standards and guidelines, subcategory--representations and codes. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011394557
MLA citation style
United States. National Bureau of Standards. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/011394557>.
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