Jack S. Levy. “The Polarity of the System and International Stability: An Empirical Analysis.” Polarity and War: The Changing Structure of International Conflict, ed., Alan Ned Sabrosky (Westview, 1985).

“The Polarity of the System and International Stability: An Empirical Analysis.” Polarity and War: The Changing Structure of International Conflict, ed., Alan Ned Sabrosky (Westview, 1985).