SADIYANI, Ni Wayan; MANDANG, Selvie Ratna Ivone; SOMAWATI, Ni Putu. Improving English speaking fluency in engineering students through problem-based learning (PBL). Journal of Language, Literature, Social and Cultural Studies, Indonesia, v. 3, n. 3, p. 248–260, 2025. DOI: 10.58881/jllscs.v3i3.394. Disponível em: https://ympn.co.id/index.php/JLLSCS/article/view/394. Acesso em: 6 nov. 2025.