Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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