NANDA INAYAH AGUSTIARA; RIZKI AMELIA. The Effect of Using Flipped Classroom Strategy on Students’ Speaking Ability. TRANSFORM : Journal of English Language Teaching and Learning, North Sumatera, Indonesia, v. 13, n. 4, p. 188–197, 2024. DOI: 10.24114/tj.v13i4.67258. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/jelt/article/view/67258. Acesso em: 3 jul. 2025.