Matthews, J., Knight, G., & Albrecht, v. S. (2019). Temples of the Grail: The search for the world's greatest relic (First edition.). Llewellyn Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMatthews, John, Gareth Knight, और von Scharfenberg Albrecht. Temples of the Grail: The Search for the World's Greatest Relic. First edition. Woodbury, Minnesota: Llewellyn Publications, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMatthews, John, et al. Temples of the Grail: The Search for the World's Greatest Relic. First edition. Llewellyn Publications, 2019.
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