APA (7th ed.) Citation

United States. Office of Management and Budget. (1998). North American industry classification system. JIST.

Chicago Style (17th ed.) Citation

United States. Office of Management and Budget. North American Industry Classification System. Indianapolis, IN: JIST, 1998.

MLA (9th ed.) Citation

United States. Office of Management and Budget. North American Industry Classification System. JIST, 1998.