Hultgren, T. (1965). Cost, prices, and profits, their cyclical relations. National Bureau of Economic Research.
Цитирование в стиле Чикаго (17-е изд.)Hultgren, Thor. Cost, Prices, and Profits, Their Cyclical Relations. New York: National Bureau of Economic Research, 1965.
Цитирование MLA (9-е изд.)Hultgren, Thor. Cost, Prices, and Profits, Their Cyclical Relations. National Bureau of Economic Research, 1965.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.