Kittikawin, N. “Results of the Health Volunteers Potential Development in Elderly Care With Knee Osteoarthritis in Community under Public Health Center 52 Samsennok, Health Department, Bangkok Metropolitan Administration”. Journal of The Department of Medical Services, vol. 46, no. 4, Jan. 2022, pp. 52-58, https://he02.tci-thaijo.org/index.php/JDMS/article/view/251151.