Hutchinson, J. W. (1963). Medians of divided highways: Current status of knowledge and annotated bibliography. Division of Engineering and Industrial Research, National Academy of Sciences - National Research Council.
Cita Chicago (17th ed.)Hutchinson, John Wendle. Medians of Divided Highways: Current Status of Knowledge and Annotated Bibliography. Washington, D.C: Division of Engineering and Industrial Research, National Academy of Sciences - National Research Council, 1963.
Cita MLA (9th ed.)Hutchinson, John Wendle. Medians of Divided Highways: Current Status of Knowledge and Annotated Bibliography. Division of Engineering and Industrial Research, National Academy of Sciences - National Research Council, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.