Parker, K. J. (2019). Sixteen ways to defend a walled city (First edition.). Orbit.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रParker, K. J. Sixteen Ways to Defend a Walled City. First edition. New York, NY: Orbit, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रParker, K. J. Sixteen Ways to Defend a Walled City. First edition. Orbit, 2019.
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