Warner, G. C., & Gehr, M. (2023). Surprise island (First Random House Children's Books edition.). Random House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWarner, Gertrude Chandler, और Mary Gehr. Surprise Island. First Random House Children's Books edition. New York: Random House, 2023.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWarner, Gertrude Chandler, और Mary Gehr. Surprise Island. First Random House Children's Books edition. Random House, 2023.
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