1[1]Diana Tussie. The Environment and International Trade Negotiations: Developing Country Stakes,New York, St. Martin's Press, 1999.
2[2]Department of Foreign Affairs and International Trade in Canada. The NAFTA at Five Years: a Partnership at Work, 1999.
3[3]Simon S. C. Tay and Daniel C. Esty. Asian Dragons and Green Trade: Environment ,Economic and International Law, Singapore Times Academic Press, 1996.
