7Frederic S. Pearson and J. Martin Rochester, International Relations,4th edition,New York:McGraw-Hill, 1998, p. 176.
8Frederic S. Pearson and J. Martin Rochester, International Relations,4th edition, New York:McGraw- Hill, 1998,pp. 177 - 178.
9Thomas Robinson,"National Interests,"in James N.Rosenau,ed.,International Politics and Freign Policy:AReader in Research and Theory,New York:Free Press,1969,pp.184-185.
10Mark R.Amstutz,International Conflicate and Cooperation,Boston:McGraw-Hill,1999,p.179.
