Boettcher, W. A. (2005). Presidential risk behavior in foreign policy: Prudence or peril? Palgrave Macmillan.
Chicago Style (17th ed.) ZitazioaBoettcher, William A. Presidential Risk Behavior in Foreign Policy: Prudence or Peril? New York: Palgrave Macmillan, 2005.
MLA (9th ed.) ZitazioaBoettcher, William A. Presidential Risk Behavior in Foreign Policy: Prudence or Peril? Palgrave Macmillan, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.