Williams, G. W. (2009). The U.S. Forest Service in the Pacific Northwest: A history. Oregon State University Press.
Цитирование в стиле Чикаго (17-е изд.)Williams, Gerald W. The U.S. Forest Service in the Pacific Northwest: A History. Corvallis, OR: Oregon State University Press, 2009.
Цитирование MLA (8-е изд.)Williams, Gerald W. The U.S. Forest Service in the Pacific Northwest: A History. Oregon State University Press, 2009.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.