Não informado. (1976). AASHTO Quarterly. American Association of State Highway and Transportation Officials.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. AASHTO Quarterly. Washington: American Association of State Highway and Transportation Officials, 1976.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. AASHTO Quarterly. American Association of State Highway and Transportation Officials, 1976.
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