Não informado. Road documentation for developing countries: A SELECTION OF IRRD ABSTRACTS. Organization for Economic Co-operation and Development.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Road Documentation for Developing Countries: A SELECTION OF IRRD ABSTRACTS. Berkshire, Inglaterra: Organization for Economic Co-operation and Development.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Road Documentation for Developing Countries: A SELECTION OF IRRD ABSTRACTS. Organization for Economic Co-operation and Development.
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