Harutaithaworn, R., M. Nuysri, and W. Iemsawasdikul. “Effects of a foot care program for risk foot ulcer of type 2 Diabetes Mellitus patients at Samrong Thap District, Surin Province”. Thai Journal of Nursing, vol. 69, no. 4, Dec. 2020, pp. 21-30, https://he02.tci-thaijo.org/index.php/TJN/article/view/244671.