Northwest Public Power Association & National Rural Electric Cooperative Association. (1947). Power unlimited.
Цитирование в стиле Чикаго (17-е изд.)Northwest Public Power Association и National Rural Electric Cooperative Association. Power Unlimited. Spokane, Wash, 1947.
Цитирование MLA (8-е изд.)Northwest Public Power Association и National Rural Electric Cooperative Association. Power Unlimited. 1947.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.