107 12.7 ENDNOTES
- Population Reference Bureau. 2017 World Population Data Sheet. https://assets.prb.org/pdf17/2017_World_Population.pdf
- Adapted from http://www.3dgeography.co.uk/settlement-patterns
- Population Reference Bureau. www.prb.org. Accesses May 12, 2018.
- Adapted from United Nations, Department of Economic and Social Affairs, Population Division. World Urbanization Prospects: The 2014 Revision. File 11a: The 30 Largest Urban Agglomeration Ranked by Population Size at each point in time, 1950-2030. http://esa.un.org/unpd/wup/CD-ROM_2014/WU
- Adapted from https://urbandesigntheory.wordpress.com/2014/12/31/the-social-and-spatial-structure-of-urban-and-regional-systems/
- www.prb.org/pdf16/prb-wpds2016-web-2016.pdf. Accessed June 10, 2017.
- https://www.cia.gov/library/publications/resources/the-world-factbook/. Accessed 10 June 2017.
- Population Reference Bureau. www.prb.org. Accesses May 25, 2017.
- Population Reference Bureau. www.prb.org. Accesses May 25, 2017.
- https://www.statista.com/statistics/270860/urbanization-by-continent. Accessed 25 May 2017.
