Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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