National Research Council (U.S.). Highway Research Board. (1952). Parking turnouts and rest areas. Highway Research Board, National Research Council.
Cita Chicago (17th ed.)National Research Council (U.S.). Highway Research Board. Parking Turnouts and Rest Areas. Washington, D.C: Highway Research Board, National Research Council, 1952.
Cita MLA (9th ed.)National Research Council (U.S.). Highway Research Board. Parking Turnouts and Rest Areas. Highway Research Board, National Research Council, 1952.
Atenció: Aquestes cites poden no estar 100% correctes.