Não informado. (2008). Roads and road construction year book & directory. Carriers Publishing Company.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Roads and Road Construction Year Book & Directory. London: Carriers Publishing Company, 2008.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Roads and Road Construction Year Book & Directory. Carriers Publishing Company, 2008.
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