1. World Health Organization [WHO]. Ageing and health. [updated 2018 February 5
2. cited 2019 June 12]. Available from: https://www.who.int/news-room/fact-sheets/detail/ageing-and-health.
3. National Population and Family Development Board. Ageing phenomenon: Malaysia towards 2030. [cited 2019 June 10]. Available from: https://www.lppkn.gov.my/index.php/factsheet-infografik-2018/956-ageing-phenomenon-malaysia-towards-2030/file.
4. New Straits Times [NST]. Growing old in an innovative new age. [updated 2018 May 1
5. cited 2019 June 15]. Available from: https://www.nst.com.my/lifestyle/heal/2018/05/364169/growing-old-innovative-new-age.