APA (7th ed.) Citation

Crowther, L. R., & Opiela, K. S. (1996). Procedure for determining work zone speed limits. Transportation Research Board, National Research Council.

Chicago Style (17th ed.) Citation

Crowther, Lloyd R., and Kenneth S. Opiela. Procedure for Determining Work Zone Speed Limits. Washington, D.C: Transportation Research Board, National Research Council, 1996.

MLA (9th ed.) Citation

Crowther, Lloyd R., and Kenneth S. Opiela. Procedure for Determining Work Zone Speed Limits. Transportation Research Board, National Research Council, 1996.

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