Não informado. National Research Council Review. National Research Council of Canada.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. National Research Council Review. Ottawa: National Research Council of Canada.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. National Research Council Review. National Research Council of Canada.
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