APA (7th ed.) Citation

Witheford, D. K., & Cunagin, W. D. (1992). Truck escape ramps. Transportation Research Board, National Research Council.

Chicago Style (17th ed.) Citation

Witheford, David K., and Wiley D. Cunagin. Truck Escape Ramps. Washington, DC: Transportation Research Board, National Research Council, 1992.

MLA (9th ed.) Citation

Witheford, David K., and Wiley D. Cunagin. Truck Escape Ramps. Transportation Research Board, National Research Council, 1992.