Ritter, W. (2022). Deepest, darkest (First paperback edition.). Algonquin Young Readers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRitter, William. Deepest, Darkest. First paperback edition. Chapel Hill, North Carolina: Algonquin Young Readers, 2022.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRitter, William. Deepest, Darkest. First paperback edition. Algonquin Young Readers, 2022.
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