Não informado. (1953). Social and economics studies. University of West Indies, Institute of Social and Economic Research.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Social and Economics Studies. Kingston: University of West Indies, Institute of Social and Economic Research, 1953.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Social and Economics Studies. University of West Indies, Institute of Social and Economic Research, 1953.
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