APA (7th ed.) Citation

U.S. Technical Committee on Industrial Classification. (1946). Standard industrial classification manual. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

U.S. Technical Committee on Industrial Classification. Standard Industrial Classification Manual. Washington: U.S. Govt. Print. Off, 1946.

MLA (9th ed.) Citation

U.S. Technical Committee on Industrial Classification. Standard Industrial Classification Manual. U.S. Govt. Print. Off, 1946.