ALBERT PAULI SIRAIT. Developing Android-Digibook with Project-Based Learning Model on Research Method Subject in Guidance and Counselling Department of Medan State University . Jurnal Multidisiplin Madani, [S. l.], v. 2, n. 11, p. 3971–3976, 2022. DOI: 10.55927/mudima.v2i11.1387. Disponível em: https://journal.formosapublisher.org/index.php/mudima/article/view/1387. Acesso em: 14 jul. 2026.