พลอาษา ท., and ประสมรักษ์ ป. “The Evaluation of the Strength of Design and Usage of the Local Health Charter in Population Perspective, Amnat Charoen Province”. Srinagarind Medical Journal, vol. 34, no. 4, July 2019, pp. 379-85, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/200767.