 අනුපාතිකයබාහිර සබැඳියන්[සංස්කරණය]UNFPA, The United Nations Population FundUnited Nations Population DivisionCICRED homepage a platform for interaction between research centres and international organizations, such as the United Nations Population Division, UNFPA, WHO and FAO.Current World PopulationNECSP HomePage සංරක්ෂණය කළ පිටපත 2007-03-01 at the Wayback MachineOverpopulationPopulation and Health InfoShare. Retrieved February 13, 2005.Population in the news homepageOptimum Population Trust සංරක්ෂණය කළ පිටපත 2019-04-02 at the Wayback MachineGallery: The World's Ten Most Populous Countries Retrieved May 13, 2009.Population Reference Bureau (2005). Retrieved February 13, 2005.Population World: Population of World. Retrieved February 13, 2004.PopulationData.net - Information and maps about populations around the world. Retrieved March 4, 2005. PopulationData.net (2005).SIEDS, Italian Society of Economics Demography and Statistics සංරක්ෂණය කළ පිටපත 2007-09-27 at the Wayb