(1995). National electrical code handbook, 1996. National Fire Protection Association.
Chicago Style aipamenaNational Electrical Code Handbook, 1996. Battery March Park, Quincy, MA: National Fire Protection Association, 1995.
MLA aipamenaNational Electrical Code Handbook, 1996. National Fire Protection Association, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.