Tiaotrakul, A., T. Koeipakvaen, and P. Sertbudra. “The Development of Physical Activity Leaders Using a Contemplative Education Approach to Promote Wellness Among the Elderly”. Asian Interdisciplinary and Sustainability Review, vol. 8, no. 2, July 2019, pp. 180-9, https://so05.tci-thaijo.org/index.php/PSAKUIJIR/article/view/242932.