Wannapong, Sasiwimon, Saowanee Nakmareong, Surussawadi Bennett, and Nomjit Nualnetr. “The Effects of Nine-Square Exercise On Balance in the Elderly with Falls Risk”. Srinagarind Medical Journal 36, no. 3 (June 18, 2021): 310–316. accessed December 6, 2025. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/251210.