Russell, E., & Rys, M. J. (2005). Centerline rumble strips. Transportation Research Board.
Cita Chicago (17th ed.)Russell, Eugene, i Margaret J. Rys. Centerline Rumble Strips. Washington, D.C: Transportation Research Board, 2005.
Cita MLA (9th ed.)Russell, Eugene, i Margaret J. Rys. Centerline Rumble Strips. Transportation Research Board, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.