Krell, K., Ernst, R., & Lenz, K. (1978). Costs and benefits of general speed limits: (maximum and minimum speeds) : report of the thirty-seventh Round Table on Transport Economics, held in Paris on 24th and 25th February, 1977. European Conference of Ministers of Transport.
Cita Chicago Style (17a ed.)Krell, Karl, R. Ernst, y Karl-Heinz Lenz. Costs and Benefits of General Speed Limits: (maximum and Minimum Speeds) : Report of the Thirty-seventh Round Table on Transport Economics, Held in Paris on 24th and 25th February, 1977. [Paris]: European Conference of Ministers of Transport, 1978.
Cita MLA (9a ed.)Krell, Karl, et al. Costs and Benefits of General Speed Limits: (maximum and Minimum Speeds) : Report of the Thirty-seventh Round Table on Transport Economics, Held in Paris on 24th and 25th February, 1977. European Conference of Ministers of Transport, 1978.