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http://www.who.int/disabilities/world_report/2011/report/en/
. Accessed 24 Mar 2019
2. United Nations, Department of Economic and Social Affairs, Population Division: World Population Prospects: The 2017 Revision, Key Findings and Advance Tables. Working Paper No. ESA/P/WP/248 (2017)
3. Facts on People with Disabilities in China.
https://www.ilo.org/wcmsp5/groups/public/—asia/—ro-bangkok/—ilo-beijing/documents/publication/wcms_142315.pdf
. Accessed 29 Mar 2019
4. Disabled Population in India as per census 2011 (2016 updated).
https://enabled.in/wp/disabled-population-in-india-as-per-census-2011-2016-updated/
. Accessed 29 Mar 2019
5. Wakamats, C., Shinjuku, K.: Statistical Handbook of Japan 2017, Japan, p. 13 (2018)