LUMBANNAHOR, Berman; DARMAHUSNI, Darmahusni; SUSENO, Muchlas. 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: 23 feb. 2026.