FIRIANA, A.; SAPUTRI, T.; AUTHAR, N.; AFANDI, M. D. Research Trends in Problem-Based Learning: A Narrative Review of Studies on Students’ Engagement. RIGGS: Journal of Artificial Intelligence and Digital Business, [S. l.], v. 5, n. 2, p. 2325–2332, 2026. DOI: 10.31004/riggs.v5i2.8748. Disponível em: https://journal.ilmudata.co.id/index.php/RIGGS/article/view/8748. Acesso em: 22 may. 2026.