APA (7th ed.) Citation

Parker, K. J. (2019). Sixteen ways to defend a walled city (First edition.). Orbit.

Chicago Style (17th ed.) Citation

Parker, K. J. Sixteen Ways to Defend a Walled City. First edition. New York, NY: Orbit, 2019.

MLA (8th ed.) Citation

Parker, K. J. Sixteen Ways to Defend a Walled City. First edition. Orbit, 2019.

Warning: These citations may not always be 100% accurate.