APA (7th ed.) Citation

United States. Forest Service. Pacific Northwest Region. (1941). Columbia National Forest, Washington. The Region.

Chicago Style (17th ed.) Citation

United States. Forest Service. Pacific Northwest Region. Columbia National Forest, Washington. [Portland, Or.]: The Region, 1941.

MLA (9th ed.) Citation

United States. Forest Service. Pacific Northwest Region. Columbia National Forest, Washington. The Region, 1941.

Warning: These citations may not always be 100% accurate.