SUBEKTI, Adaninggar Septi; SUSYETINA, Arida. IELTS Speaking Training for High School Teachers in Yogyakarta. MATAPPA: Jurnal Pengabdian Kepada Masyarakat, [S. l.], v. 3, n. 2, p. 80–86, 2020. DOI: 10.31100/matappa.v3i2.385. Disponível em: https://journal.matappa.ac.id/index.php/matappa/article/view/385. Acesso em: 22 mar. 2026.