Organization for Economic Cooperation and Development. Steering Committee for Road Research. (1972). Road research publications, 1968-1972: Construction, safety, traffic. Organisation for Economic Co-operation and Development.
Cita Chicago (17th ed.)Organization for Economic Cooperation and Development. Steering Committee for Road Research. Road Research Publications, 1968-1972: Construction, Safety, Traffic. [Paris]: Organisation for Economic Co-operation and Development, 1972.
Cita MLA (9th ed.)Organization for Economic Cooperation and Development. Steering Committee for Road Research. Road Research Publications, 1968-1972: Construction, Safety, Traffic. Organisation for Economic Co-operation and Development, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.