APA-viite (7. p.)

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-viite (17. p.)

National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, ja Ingrid B. Potts. Safety of U-turns at Unsignalized Median Openings. Washington, D.C: Transportation Research Board, 2004.

MLA-viite (9. p.)

National Cooperative Highway Research Program, et al. Safety of U-turns at Unsignalized Median Openings. Transportation Research Board, 2004.