APA (7th ed.) Citation

United States. Forest Service. (1923). Trail construction on national forests. GPO.

Chicago Style (17th ed.) Citation

United States. Forest Service. Trail Construction on National Forests. [Washington]: GPO, 1923.

MLA (9th ed.) Citation

United States. Forest Service. Trail Construction on National Forests. GPO, 1923.

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