Mario Arturo Ruiz Estrada, Rashid Ating, and Yew-Joe Ho. “The Optimum Age of Retirement Index: The Case of Malaysia”. Regional Economic Development Research 2, no. 1 (February 4, 2021): 1–8. Accessed November 22, 2024. https://ojs.wiserpub.com/index.php/REDR/article/view/695.