National Research Council. (1975). Application of economic analysis to transportation problems. TRB.
Cita Chicago (17th ed.)National Research Council. Application of Economic Analysis to Transportation Problems. Washington, D.C: TRB, 1975.
Cita MLA (9th ed.)National Research Council. Application of Economic Analysis to Transportation Problems. TRB, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.