APA (7th ed.) Zitazioa

Fletcher, G. P. Defending humanity: When force is justified and why. Oxford University Press.

Chicago Style (17th ed.) Zitazioa

Fletcher, George P. Defending Humanity: When Force Is Justified and Why. Oxford: Oxford University Press.

MLA (9th ed.) Zitazioa

Fletcher, George P. Defending Humanity: When Force Is Justified and Why. Oxford University Press.