APA引文

United States. Forest Service. (1989). Northern Region: Summer of '88. Forest Service, US Dept. of Agriculture.

Chicago Style (17th ed.) Citation

United States. Forest Service. Northern Region: Summer of '88. [Missoula, Mont.?]: Forest Service, US Dept. of Agriculture, 1989.

MLA引文

United States. Forest Service. Northern Region: Summer of '88. Forest Service, US Dept. of Agriculture, 1989.

警告：這些引文格式不一定是100％准確.