3See Thomas Buergenthal and Sean D. Murphy, Public International Law (3rd edition), Beijing: Law Press, 2002, p. 63.
4Peter Van. Elsuwege, "On the Boundaries Between the European Union's First Pillar and Second Pillar: A Comment on the ECOW as Judgment of the European Court of Justice", Columbia Journal of European Law, Vol. 15, No.3, Summer 2009, pp. 534-537.
5Thomas Buergenthal and Sean D. Murphy, Public International Law, p. 62.
6Louis Henkin, International Law: Politics and Values, Martinus Nijhoff Publishers, 1995, p. 1.
7Rnmki Basu, The United Nations-Structure and Functions of an International Organization, Sterling Publisher Private Limited, 1993, pp. 13-17.
8T. R Reid, The United States of Europe, New York:Penguin Books USA Inc. , 2005, pp. 4-9.
9《里斯本条约》第54条.
10P. S. R.F. Mathijsen, A Guide to European Union Law (6th edition), Sweet & Maxwell, p. 5.