Cahn, J. (2026). The Altar of Pergamon: The Mystery of the Dark Angel and the Future of the World. Frontline.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCahn, Jonathan. The Altar of Pergamon: The Mystery of the Dark Angel and the Future of the World. Frontline, 2026.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCahn, Jonathan. The Altar of Pergamon: The Mystery of the Dark Angel and the Future of the World. Frontline, 2026.
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