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2. United Nations, “Accessibility and Development - Mainstreaming disability in the post-2015 development agenda.” United Nation, New York (2015). https://www.un.org/disabilities/documents/accessibility_and_development.pdf
3. Changing Preferences with Ageing – Housing Choices and Housing Plans of Older People
4. Hussein, Yaacob. (2012), Development of Accessible Design in Malaysia.
5. World Health Organization, (2018), 7. Housing Accessibility.