Testing the Effectiveness and Practicality of Android Media in Vocational Schools by Using the 4-D Development Model. JITACS: Journal of Information Technology and Computer Science, [S. l.], v. 1, n. 2, p. 51–58, 2022. DOI: 10.31849/jitacs.v1i2.9845. Disponível em: https://journal.unilak.ac.id/index.php/JITACS/article/view/9845. Acesso em: 4 apr. 2026.