Development of android learning media for lubrication system competency in the concentration of light vehicle engineering skills at ma’arif nu 1 ajibarang vocational high school. JMEL : Journal of Mechanical Engineering Learning, [S. l.], v. 14, n. 1, p. 10–16, 2025. DOI: 10.15294/jmel.v14.i1.16401. Disponível em: https://journal.unnes.ac.id/journals/jmel/article/view/16401. Acesso em: 6 dec. 2025.