Using this graphic and referring to it is encouraged, and please use it in presentations, web pages, newspapers, blogs and reports.
For any form of publication, please include the link to this page and give the cartographer/designer credit (in this case Hugo Ahlenius, UNEP/GRID-Arendal)
United Nations Population Division. 2007. World Urbanization Prospects: The 2007 Revision Population Database. HYPERLINK 'http://esa.un.org/unup/index.asp?panel=1' http://esa.un.org/unup/index.asp?panel=1 (Accessed November 28, 2008)