Sungkue, S., C. Septham, and U. Kongkam. “Effects of Strengthening and Stretching Exercises on Pain and ROM of Trunkin Females with Low Back Pain: A pilot study”. NU Journal of Nursing and Health Sciences, vol. 13, no. 1, May 2019, pp. 110-2, https://he01.tci-thaijo.org/index.php/NurseNu/article/view/189249.