National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, & Potts, I. B. (2004). Safety of U-turns at unsignalized median openings. Transportation Research Board.
Chicago-Zitierstil (17. Ausg.)National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, und Ingrid B. Potts. Safety of U-turns at Unsignalized Median Openings. Washington, D.C: Transportation Research Board, 2004.
MLA-Zitierstil (9. Ausg.)National Cooperative Highway Research Program, et al. Safety of U-turns at Unsignalized Median Openings. Transportation Research Board, 2004.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.