Não informado. Studies in economics and business. University of Minnesota.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Studies in Economics and Business. Minneapolis, Minn: University of Minnesota.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Studies in Economics and Business. University of Minnesota.
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