SETYOWATI, R.; OKTAVIANI, I.; HASTUTI, I. Does the co-trainers learning model improve English proficiency? Evidence from vocational high school students across different study programs. Bulletin of Educational Management and Innovation, [S. l.], v. 4, n. 2, p. 442–461, 2026. DOI: 10.56587/bemi.v4i2.166. Disponível em: https://journal.rafandhapress.com/BEMI/article/view/166. Acesso em: 13 sep. 2026.