Harvey, B. (2004). The bear family. Chelsea Clubhouse.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarvey, Bev. The Bear Family. Philadelphia: Chelsea Clubhouse, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHarvey, Bev. The Bear Family. Chelsea Clubhouse, 2004.
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