APA (7th ed.) Citation

United States. Department of Agriculture. Office of the Secretary & Russell, G. A. (1920). Machine for trimming camphor trees. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Office of the Secretary and G. A. Russell. Machine for Trimming Camphor Trees. Washington: U.S. GPO, 1920.

MLA (9th ed.) Citation

United States. Department of Agriculture. Office of the Secretary and G. A. Russell. Machine for Trimming Camphor Trees. U.S. GPO, 1920.