Não informado. (2000). Transportation engineer. American Cartagemen Publishing Corporation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Transportation Engineer. Mount Morris, Ill: American Cartagemen Publishing Corporation, 2000.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Transportation Engineer. American Cartagemen Publishing Corporation, 2000.
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