Sirichokchaitrakool, S., P. Boonpo, and M. Srichinda. “The study of problem-solving abilities by digital games-based learning (DGBL) together with visual thinking; social studies for grade 1 students”. Srinakharinwirot Research and Development Journal of Humanities and Social Sciences, vol. 17, no. 1, January-June, June 2025, pp. 1-15, Article 267714, https://so04.tci-thaijo.org/index.php/swurd/article/view/267714.