Dyfyniad APA

Lewis, D. L. (1999). Road user and mitigation costs in highway pavement projects. National Academy Press.

Dyfyniad Arddull Chicago

Lewis, David L. Road User and Mitigation Costs in Highway Pavement Projects. Washington, D.C: National Academy Press, 1999.

Dyfyniad MLA

Lewis, David L. Road User and Mitigation Costs in Highway Pavement Projects. National Academy Press, 1999.

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