National Board of Fire Underwriters & National Fire Protection Association. National electrical code. National Fire Protection Association.
Cita Chicago Style (17a ed.)National Board of Fire Underwriters y National Fire Protection Association. National Electrical Code. Quincy, MA: National Fire Protection Association.
Cita MLA (8a ed.)National Board of Fire Underwriters y National Fire Protection Association. National Electrical Code. National Fire Protection Association.
Precaución: Estas citas no son 100% exactas.