Não informado. Transport policy and decision making. Martinus Nijhoff Publishers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Transport Policy and Decision Making. The Hague, Holanda: Martinus Nijhoff Publishers.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Transport Policy and Decision Making. Martinus Nijhoff Publishers.
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