Fletcher, G. P. Defending humanity: When force is justified and why. Oxford University Press.
Cita Chicago (17th ed.)Fletcher, George P. Defending Humanity: When Force Is Justified and Why. Oxford: Oxford University Press.
Cita MLA (9th ed.)Fletcher, George P. Defending Humanity: When Force Is Justified and Why. Oxford University Press.
Atenció: Aquestes cites poden no estar 100% correctes.