English Learning Activities in Heavy Equipment Engineering Study Program at Olat Maras Community Academy. Khidmatuna: Journal of Research and Community Service, [S. l.], v. 1, n. 2, p. 1–9, 2023. DOI: 10.58330/khidmatuna.v2i1.91. Disponível em: https://jurnal.institutsunandoe.ac.id/index.php/khidmatuna/article/view/91. Acesso em: 2 feb. 2026.