APA (7e ed.) Bronvermelding

Gardner, L. C. (2013). Killing machine: The American Presidency in the age of drone warfare. The New Press.

Chicago (17e ed.) Bronvermelding

Gardner, Lloyd C. Killing Machine: The American Presidency in the Age of Drone Warfare. New York: The New Press, 2013.

MLA (9e ed.) Bronvermelding

Gardner, Lloyd C. Killing Machine: The American Presidency in the Age of Drone Warfare. The New Press, 2013.