Button, K. (1993). Transport, the environment and economic policy. Elgar.
Cita Chicago (17th ed.)Button, Kenneth. Transport, the Environment and Economic Policy. Aldershot, Hants, Brookfield, Vt: Elgar, 1993.
Cita MLA (9th ed.)Button, Kenneth. Transport, the Environment and Economic Policy. Elgar, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.