APA (7th ed.) Zitazioa

Power, S. (2003). A problem from hell: Merica and the age of genocide. HarperCollins.

Chicago Style (17th ed.) Zitazioa

Power, Samantha. A Problem from Hell: Merica and the Age of Genocide. New York: HarperCollins, 2003.

MLA (9th ed.) Zitazioa

Power, Samantha. A Problem from Hell: Merica and the Age of Genocide. HarperCollins, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.