APA (7th ed.) Citation

United States. Forest Service. (1942). Forest resources of Ponderosa pine region of Washington and Oregon. [s.n.].

Chicago Style (17th ed.) Citation

United States. Forest Service. Forest Resources of Ponderosa Pine Region of Washington and Oregon. [Washington]: [s.n.], 1942.

MLA (9th ed.) Citation

United States. Forest Service. Forest Resources of Ponderosa Pine Region of Washington and Oregon. [s.n.], 1942.

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