Berg, R. B. (1974). Building stone in Montana. Montana College of Mineral Science and Technology : for sale by Montana Bureau of Mines and Geology.
Цитирование в стиле Чикаго (17-е изд.)Berg, Richard B. Building Stone in Montana. Butte: Montana College of Mineral Science and Technology : for sale by Montana Bureau of Mines and Geology, 1974.
Цитирование MLA (8-е изд.)Berg, Richard B. Building Stone in Montana. Montana College of Mineral Science and Technology : for sale by Montana Bureau of Mines and Geology, 1974.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.