National Fire Protection Association & American National Standards Institute. (2004). National electrical code: 2005 (2005 ed.). National Fire Protection Association.
Chicago-viite (17. p.)National Fire Protection Association ja American National Standards Institute. National Electrical Code: 2005. 2005 ed. Quincy, Mass: National Fire Protection Association, 2004.
MLA-viite (9. p.)National Fire Protection Association ja American National Standards Institute. National Electrical Code: 2005. 2005 ed. National Fire Protection Association, 2004.
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