Downs, A. (1992). Stuck in traffic: Coping with peak-hour traffic congestion. Brookings Institution Lincoln Institute of Land Policy.
Cita Chicago (17th ed.)Downs, Anthony. Stuck in Traffic: Coping with Peak-hour Traffic Congestion. Washington, D.C., Cambridge, Mass: Brookings Institution Lincoln Institute of Land Policy, 1992.
Cita MLA (9th ed.)Downs, Anthony. Stuck in Traffic: Coping with Peak-hour Traffic Congestion. Brookings Institution Lincoln Institute of Land Policy, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.