Yew, André Siew Yeong. “Re-Thinking Urban Planning for Singapore’s Extended Lifespan Population of 2050: A League of Its Own”. eTropic: electronic journal of studies in the tropics 19, no. 2 (December 21, 2020): 249–273. Accessed January 26, 2021. https://journals.jcu.edu.au/etropic/article/view/3744.