In addition to the main bodies, many other organizations help the United Nations carry out its work. Funds and programmes (such as UNICEF and UNDP) are subsidiary bodies of the UN General Assembly. Specialized agencies (such as UNESCO and WHO) are linked to the UN through special agreements. Related organizations (such as WTO) address specialized areas and have their own legislative bodies and budgets.*
*United Nations. 2008. United Nations today. New York: United Nations Department of Public Information.