Cita APA (7a ed.)

National Fire Protection Association & American National Standards Institute. (1999). National electrical code: 1999 (1999 ed.). National Fire Protection Association.

Cita Chicago Style (17a ed.)

National Fire Protection Association y American National Standards Institute. National Electrical Code: 1999. 1999 ed. Quincy, Mass: National Fire Protection Association, 1999.

Cita MLA (9a ed.)

National Fire Protection Association y American National Standards Institute. National Electrical Code: 1999. 1999 ed. National Fire Protection Association, 1999.