Sorell. Born of Resistance. University of Arizona Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSorell. Born of Resistance. University of Arizona Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSorell. Born of Resistance. University of Arizona Press.
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