Widaningsih, Lilis, et al. “Analysis and Mapping of Technical Competency Needs for TVET Teachers in the Era of Industry 4.0”. Journal of Technical Education and Training, vol. 17, no. 2, June 2025, pp. 151-64, https://penerbit.uthm.edu.my/ojs/index.php/JTET/article/view/19628.