Paksangkhane, Suchita, Udomsak Mahaveerawat, and Piti Tangphaisan. 2017. “Application of self-care theory program to relieve knee joint pain and satisfaction among elderly with knee osteoarthritis”. Asia-Pacific Journal of Science and Technology 16 (1):1-10. https://so01.tci-thaijo.org/index.php/APST/article/view/83091.