กฤตาคม ฑิฆัมพร, and พันธ์งาม อมรรัตน์. “A Development of the Critical Thinking Skills by the Evaluation Technique in Mathematics for Mattayom Suksa Four Level of Wangyai Pittayasan School under the Secondary Educational Service Area Office 22”. Ubon Ratchathani Journal of Research and Evaluation 3, no. 2 (August 27, 2021): 11–20. accessed September 24, 2026. https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/250938.