Não informado. (1939). Manchester school of economic and social studies. Basil Blackwell.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Manchester School of Economic and Social Studies. Oxford, Inglaterra: Basil Blackwell, 1939.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Manchester School of Economic and Social Studies. Basil Blackwell, 1939.
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