APA (7th ed.) Citation

United States. Department of Agriculture. (1931). Pine tree treasures. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Pine Tree Treasures. [Washington]: GPO, 1931.

MLA (9th ed.) Citation

United States. Department of Agriculture. Pine Tree Treasures. GPO, 1931.

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