FIRMANSYAH, F.; RISNAWATY. Developing English Speaking Teaching Material Based on Project Based learning Spiritual Approaches at Senior High School Student of Islamic Boarding School Ulun Nuha Medan. International Journal of Educational Research Excellence, [S. l.], v. 5, n. 1, p. 6–11, 2025. DOI: 10.55299/ijere.v5i1.1618. Disponível em: https://ejournal.ipinternasional.com/index.php/ijere/article/view/1618. Acesso em: 10 feb. 2026.