1. Declaration of Alma-Ata. (1978).
2. Retrieved, June 1, 2008, from http://www.who.int/hpr/NPH/docs/declaration/almaata.pdf
3. United Nations. (1982). World programme of action concerning disabled persons. Retrieved, June 1, 2008, from http://www.un.org/documents/ga/res/37/a37r052.htm
4. United Nations. (1993). Resolution on standard rules of the equalization of opportunities for persons with disabilities. Retrieved, June 1, 2008, from http://www.un.org/esa/socdev/enable/dissre00.htm
5. United Nations. (2003). Convention of the rights of the child. Retrieved, June 1, 2008, from http://www.unhchr.ch/html/menu3/b/k2crc.htm