Habibi, M., Sunardi, and Sudiyanto. “Identification of Opportunities for Utilizing E-Modules With a Problem Based Learning Approach to Facilitate Learning in Vocational High Schools”. Jurnal Edutech Undiksha, vol. 10, no. 2, Dec. 2022, pp. 311-22, doi:10.23887/jeu.v10i2.52722.