National Board of Fire Underwriters & National Fire Protection Association. National electrical code. National Fire Protection Association.
Цитирование в стиле Чикаго (17-е изд.)National Board of Fire Underwriters и National Fire Protection Association. National Electrical Code. Quincy, MA: National Fire Protection Association.
Цитирование MLA (8-е изд.)National Board of Fire Underwriters и National Fire Protection Association. National Electrical Code. National Fire Protection Association.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.