APA (7th ed.) Citation

United States. Forest Service. (1906). Western yellow pine (Pinus ponderosa). United States Dept. of Agriculture, Forest Service.

Chicago Style (17th ed.) Citation

United States. Forest Service. Western Yellow Pine (Pinus Ponderosa). [Washington, D.C.]: United States Dept. of Agriculture, Forest Service, 1906.

MLA (9th ed.) Citation

United States. Forest Service. Western Yellow Pine (Pinus Ponderosa). United States Dept. of Agriculture, Forest Service, 1906.

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