Bridwell, N. (1998). Clifford's first snow day. Scholastic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBridwell, Norman. Clifford's First Snow Day. New York: Scholastic, 1998.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBridwell, Norman. Clifford's First Snow Day. Scholastic, 1998.
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