Cita APA (7a ed.)

Turnbull, S. R., Noon, S., Cowper, M., & Bogdanovic, N. (2009). Chinese walled cities 221 BC-AD 1644. Osprey.

Cita Chicago Style (17a ed.)

Turnbull, Stephen R., Steve Noon, Marcus Cowper, y Nikolai Bogdanovic. Chinese Walled Cities 221 BC-AD 1644. Oxford: Osprey, 2009.

Cita MLA (9a ed.)

Turnbull, Stephen R., et al. Chinese Walled Cities 221 BC-AD 1644. Osprey, 2009.