Chantra, R., C. Sudjan, C. Tangrungcharoen, . Y. Thongpa, T. Nutchaya, T. Panwai, N. Tongcham, N. Tongcham, N. Chamnan, J. Kumnertkoh, and C. Luabunjong. “The Effects of Thai Herbal Paste for Knee Pain in Elderly Osteoarthritis at Sriwichai Sub-District Health Promoting Hospital, Phunphin District, Suratthani, Thailand”. Rajamangala University of Technology Srivijaya Research Journal, vol. 13, no. 1, Mar. 2021, pp. 165-73, https://li01.tci-thaijo.org/index.php/rmutsvrj/article/view/240473.