Shurtliff, L. (2019). The obsidian compass (First paperback edition.). Katherine Tegen Books, an imprint of HarperCollins Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रShurtliff, Liesl. The Obsidian Compass. First paperback edition. New York, NY: Katherine Tegen Books, an imprint of HarperCollins Publishers, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रShurtliff, Liesl. The Obsidian Compass. First paperback edition. Katherine Tegen Books, an imprint of HarperCollins Publishers, 2019.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.