Umnapiang, Phadet. “The Development of Intelligence Learning Media for Improving Occupational Competence in Thailand Information and Digital Content Competency Level 3”. Journal of Technical Education and Training, vol. 14, no. 2, Sept. 2022, pp. 14-23, https://publisher.uthm.edu.my/ojs/index.php/JTET/article/view/10920.