Chulakadabba, Sudsabuy. “How to Keep Fit Beyond the Age of 60 in Psychiatric Aspects”. Siriraj Medical Journal 60, no. 4 (July 1, 2008): 213–215. Accessed May 9, 2024. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/246437.