TAMPUBOLON, I. W. E-Module Development Based on Problem Based Learning (PBL) on Material Class X High School Chemistry Association. Jurnal Mekintek : Jurnal Mekanikal, Energi, Industri, Dan Teknologi, [S. l.], v. 13, n. 1, p. 69–74, 2022. DOI: 10.35335/mekintek.v13i1.123. Disponível em: https://ejournal.isha.or.id/index.php/Mekintek/article/view/123. Acesso em: 21 apr. 2026.