UFIQURROHMAN, U.; ANTIKA, L. T. The Effect of Problem-based Learning on Students Collaboration Skills in Islamic Boarding Schools. DIDAKTIKA : Jurnal Penelitian Tindakan Kelas, [S. l.], v. 1, n. 1, p. 1–6, 2023. DOI: 10.63757/jptk.v1i1.1. Disponível em: https://didaktika.lombokinstitute.com/index.php/JPTK/article/view/1. Acesso em: 18 may. 2026.