APA (7th ed.) Citation

United States. Federal Highway Administration & Turner-Fairbank Highway Research Center. (2007). Strengthening historic covered bridges to carry modern traffic. Federal Highway Administration.

Chicago Style (17th ed.) Citation

United States. Federal Highway Administration and Turner-Fairbank Highway Research Center. Strengthening Historic Covered Bridges to Carry Modern Traffic. McLean, Va.: Federal Highway Administration, 2007.

MLA (9th ed.) Citation

United States. Federal Highway Administration and Turner-Fairbank Highway Research Center. Strengthening Historic Covered Bridges to Carry Modern Traffic. Federal Highway Administration, 2007.

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