Douglas, I. (2025). Abyss (First edition.). Harper Voyager, an imprint of HarperCollins Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDouglas, Ian. Abyss. First edition. [New York, N.Y.]: Harper Voyager, an imprint of HarperCollins Publishers, 2025.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDouglas, Ian. Abyss. First edition. Harper Voyager, an imprint of HarperCollins Publishers, 2025.
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