Kalapakdee, U., K. Amnatsatsue, P. Kerdmongkol, and T. Rawiworrakul. “The Effects of Self-Management Program for Older Adults with Knee Osteoarthritis in Angthong Province”. Thai Journal of Health Education, vol. 43, no. 1, May 2020, pp. 100-12, https://he01.tci-thaijo.org/index.php/muhed/article/view/242464.