Não informado. (1975). Language Teaching and Linguistics Abstracts. Cambridge University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Language Teaching and Linguistics Abstracts. London: Cambridge University Press, 1975.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Language Teaching and Linguistics Abstracts. Cambridge University Press, 1975.
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