National Cooperative Highway Research Program & Berger, R. L. (2005). Integrated roadside vegetation management. Transportation Research Board, National Research Council.
Cita Chicago (17th ed.)National Cooperative Highway Research Program i Robert L. Berger. Integrated Roadside Vegetation Management. Washington, D.C: Transportation Research Board, National Research Council, 2005.
Cita MLA (9th ed.)National Cooperative Highway Research Program i Robert L. Berger. Integrated Roadside Vegetation Management. Transportation Research Board, National Research Council, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.