Shannon, D. (2020). Roy digs dirt (First edition.). The Blue Sky Press, an imprint of Scholastic, Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रShannon, David. Roy Digs Dirt. First edition. New York: The Blue Sky Press, an imprint of Scholastic, Inc., 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रShannon, David. Roy Digs Dirt. First edition. The Blue Sky Press, an imprint of Scholastic, Inc., 2020.
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