PANJAITAN, Nelson Balisar. Students’ Perceptions of TOEFL Preparation Classes at Universitas Advent Indonesia. 12th International Scholars Conference 2025, [S. l.], v. 12, n. 3, p. 587–599, 2026. DOI: 10.31154/isc12.v12i3.86.587-599. Disponível em: https://conference.unklab.ac.id/index.php/isc/article/view/86. Acesso em: 17 mar. 2026.