Não informado. (1971). Literacy Work. International Institute for Adult Literacy Methods.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Literacy Work. Teheran: International Institute for Adult Literacy Methods, 1971.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Literacy Work. International Institute for Adult Literacy Methods, 1971.
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