1. [1] United Nations: Goal 11: Make cities inclusive, safe, resilient and sustainable, United Nations, 2016. https://www.un.org/sustainabledevelopment/cities/ [accessed in December, 2017]
2. [2] United Nations: Goal 6: Ensure access to water and sanitation for all, United Nations, 2016. https://www.un.org/sustainabledevelopment/water-and-sanitation/ [accessed in December, 2017]
3. [3] United Nations DoEaSA, Population Division: World Urbanization Prospects: The 2018 Revision, Online Edition. United Nations, Department of Economic and Social Affairs, Population Division, New York, USA, 2018.
4. [4] WHO and UNICEF: Household data, WHO and UNICEF, 2017. https://washdata.org/data/household#!/ [accessed in June, 2019]
5. [5] UNEP, Bangkok Metropolitan Administration: The Bangkok state of environment report 2003. Bangkok Metropolitan Administration, Bangkok, Thailand, 2003.