Noel, K., & Krampien, C. (2021). Coo (First Greenwillow paperback edition.). Greenwillow Books, an imprint of HarperCollins Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNoel, Kaela, और Celia Krampien. Coo. First Greenwillow paperback edition. New York, NY: Greenwillow Books, an imprint of HarperCollins Publishers, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNoel, Kaela, और Celia Krampien. Coo. First Greenwillow paperback edition. Greenwillow Books, an imprint of HarperCollins Publishers, 2021.
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