United States. Forest Service. (1989). Northern Region: Summer of '88. Forest Service, US Dept. of Agriculture.
Цитирование в стиле Чикаго (17-е изд.)United States. Forest Service. Northern Region: Summer of '88. [Missoula, Mont.?]: Forest Service, US Dept. of Agriculture, 1989.
Цитирование MLA (8-е изд.)United States. Forest Service. Northern Region: Summer of '88. Forest Service, US Dept. of Agriculture, 1989.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.