The Application of Group Discussion Method to Improvr the Students’ Achievement on Speaking Skills of Seventh Grade at SMPN 4 Pematangsiantar. Bilingual : Jurnal Pendidikan Bahasa Inggris, [S. l.], v. 7, n. 2, p. 111 – 119, 2025. DOI: 10.36985/zt8jvd36. Disponível em: http://jurnal.usi.ac.id/index.php/jbl/article/view/1998. Acesso em: 31 okt. 2025.