9Nicholas Greenwood Onuf,World of our Making,Columbia:University of South Carolina Press,1989.
10John Ruggie,"What Makes the World Hang Together? Neo-utilitarianism and the Social Constructivist Challenge, "in Peter J. Katzenstein, Robert O. Keohane,and Stephen D. Krasner, eds.,Exploration and Contestation in the Study of World Politics, Cambridge, The MIT Press, 1999, p. 222.