APA (7th ed.) Citation

National Board of Boiler and Pressure Vessel Inspectors, American National Standards Institute, & National Board of Boiler and Pressure Vessel Inspectors. (1923). National Board inspection code: An American National Standard. National Board of Boiler and Pressure Vessel Inspectors.

Chicago Style (17th ed.) Citation

National Board of Boiler and Pressure Vessel Inspectors, American National Standards Institute, and National Board of Boiler and Pressure Vessel Inspectors. National Board Inspection Code: An American National Standard. Columbus, Ohio: National Board of Boiler and Pressure Vessel Inspectors, 1923.

MLA (9th ed.) Citation

National Board of Boiler and Pressure Vessel Inspectors, et al. National Board Inspection Code: An American National Standard. National Board of Boiler and Pressure Vessel Inspectors, 1923.