Ullman, G. L., Porter, R. J., & Karkee, G. J. (2009). Implementation guide for monitoring work zone safety and mobility impacts. Texas Transportation Institute, Texas A&M University System.
Chicago Style (17th ed.) CitationUllman, Gerald L., Richard J. Porter, and Ganesh Jung Karkee. Implementation Guide for Monitoring Work Zone Safety and Mobility Impacts. College Station, Tex.: Texas Transportation Institute, Texas A&M University System, 2009.
MLA (9th ed.) CitationUllman, Gerald L., et al. Implementation Guide for Monitoring Work Zone Safety and Mobility Impacts. Texas Transportation Institute, Texas A&M University System, 2009.
Warning: These citations may not always be 100% accurate.