WARUWU, Yaredi. Enhancing Formal Academic Speaking through Problem-Based Learning in EFL Higher Education. Jo-ELT (Journal of English Language Teaching) Fakultas Pendidikan Bahasa & Seni Prodi Pendidikan Bahasa Inggris IKIP, [S. l.], v. 13, n. 1, p. 153–165, 2026. DOI: 10.33394/jo-elt.v13i1.20047. Disponível em: https://e-journal.undikma.ac.id/index.php/joelt/article/view/20047. Acesso em: 9 sep. 2026.