Panajun, Chaiwat, Narongrith Intanam, and Rattana Panyapa. “The Construction of Historical Empathy Test of First Year Undergraduate Student Applying Polytomous Item Response Theory”. Ubon Ratchathani Journal of Research and Evaluation 10, no. 2 (December 26, 2021): 12–22. Accessed April 20, 2024. https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/251492.