LUMBANNAHOR, B. .; DARMAHUSNI, D.; SUSENO, M. . Developing English Speaking Material For Students Of Business And Management Program At Vocational School. International Journal of Educational Research & Social Sciences , [S. l.], v. 4, n. 3, p. 460–464, 2023. DOI: 10.51601/ijersc.v4i3.651. Disponível em: https://ijersc.org/index.php/go/article/view/651. Acesso em: 28 jul. 2025.