Cita APA (7a ed.)

Fletcher, G. P., & Ohlin, J. D. (2008). Defending humanity: When force is justified and why. YorkOxford University Press.

Cita Chicago Style (17a ed.)

Fletcher, George P., y Jens David Ohlin. Defending Humanity: When Force Is Justified and Why. Oxford ; New: YorkOxford University Press, 2008.

Cita MLA (9a ed.)

Fletcher, George P., y Jens David Ohlin. Defending Humanity: When Force Is Justified and Why. YorkOxford University Press, 2008.