Cita APA

National Fire Protection Association & American National Standards Institute. (2007). National electrical code: 2008 (2008 ed.). National Fire Protection Association.

Citación estilo Chicago

National Fire Protection Association and American National Standards Institute. National Electrical Code: 2008. 2008 ed. Quincy, Mass: National Fire Protection Association, 2007.

Cita MLA

National Fire Protection Association and American National Standards Institute. National Electrical Code: 2008. 2008 ed. National Fire Protection Association, 2007.