SIGARA, Hasbi Noris. Group Development in Speaking Classroom for Adult Learners. Journal of English Teaching, Literature, and Applied Linguistics, [S. l.], v. 2, n. 1, p. 22–25, 2019. DOI: 10.30587/jetlal.v2i1.2430. Disponível em: https://journal.umg.ac.id/index.php/jetlal/article/view/2430. Acesso em: 4 jun. 2025.