Srichanchai, U. .-., C. .-. Sumngern, and S. .-. Somanusorn. “Predictive Factors of Fatigue Among Older Adults With Type 2 Diabetes Mellitus”. Nursing Research and Innovation Journal, vol. 22, no. 2, Feb. 2017, pp. 163-76, https://he02.tci-thaijo.org/index.php/RNJ/article/view/40833.