1. The Atlas of Urban Expansion;Angel,2012
2. 68% of the World Population Projected to Live in Urban Areas by 2050, Says UNhttps://www.un.org/development/desa/en/news/population/2018-revision-of-world-urbanization-prospects.html
3. Children in the City: Home, Neighbourhood and Community;Christensen,2003
4. The Politics of Happinesshttps://www.yesmagazine.org/issues/finding-courage/thepolitics-of-happiness
5. Prioritizing Sustainable City Indicators for Cambodia