Não informado. Youth and freedom. Institute for International Youth Affairs.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Youth and Freedom. New York: Institute for International Youth Affairs.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Youth and Freedom. Institute for International Youth Affairs.
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