APA (7th ed.) Citation

United States. Forest Service. (1927). Umatilla National Forest, south half. GPO.

Chicago Style (17th ed.) Citation

United States. Forest Service. Umatilla National Forest, South Half. [Washington]: GPO, 1927.

MLA (9th ed.) Citation

United States. Forest Service. Umatilla National Forest, South Half. GPO, 1927.

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