APA (7th ed.) Citation

United States. Bureau of Public Roads. (1914). The road drag and how it is used. U.S. Dept. of Agriculture.

Chicago Style (17th ed.) Citation

United States. Bureau of Public Roads. The Road Drag and How It Is Used. Washington, D.C.: U.S. Dept. of Agriculture, 1914.

MLA (9th ed.) Citation

United States. Bureau of Public Roads. The Road Drag and How It Is Used. U.S. Dept. of Agriculture, 1914.