Kupchik. The Real School Safety Problem. University of California Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKupchik. The Real School Safety Problem. University of California Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKupchik. The Real School Safety Problem. University of California Press.
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