HARTATIK, S. F. PROJECT BASED-LEARNING (PBL): AN OFFERED SOLUTION FOR SPEAKING CLASS. Celtic : A Journal of Culture, English Language Teaching, Literature and Linguistics, [S. l.], v. 2, n. 2, p. 34–42, 2016. DOI: 10.22219/celtic.v2i2.3750. Disponível em: https://ejournal.umm.ac.id/index.php/celtic/article/view/3750. Acesso em: 25 nov. 2024.