United Nations. (2008). Urban agglomerations 2007. United Nations.
Cita Chicago Style (17a ed.)United Nations. Urban Agglomerations 2007. States United of America: United Nations, 2008.
Cita MLA (9a ed.)United Nations. Urban Agglomerations 2007. United Nations, 2008.
Precaución: Estas citas no son 100% exactas.