Frye, D. (2018). Walls: A history of civilization in blood and brick (First Scribner har@dcover edition.). Scribner.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrye, David. Walls: A History of Civilization in Blood and Brick. First Scribner har@dcover edition. New York: Scribner, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFrye, David. Walls: A History of Civilization in Blood and Brick. First Scribner har@dcover edition. Scribner, 2018.
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