Não informado. (1974). Canadian Journal of Civil Engineering. National Research Council of Canada.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Canadian Journal of Civil Engineering. Ottawa: National Research Council of Canada, 1974.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Canadian Journal of Civil Engineering. National Research Council of Canada, 1974.
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