APA (7th ed.) Citation

Ray, M. H., Weir, J. A., & Hopp, J. A. (2003). In-service performance of traffic barriers. Transportation Research Board.

Chicago Style (17th ed.) Citation

Ray, Malcolm H., Jennifer A. Weir, and Jeffrey Anton Hopp. In-service Performance of Traffic Barriers. Washington, D.C: Transportation Research Board, 2003.

MLA (9th ed.) Citation

Ray, Malcolm H., et al. In-service Performance of Traffic Barriers. Transportation Research Board, 2003.