ANDY WIJAYA; SISCA; HENGKI MANGIRING PARULIAN SIMARMATA. PENGEMBANGAN TEKNIK MENGAJAR GURU DI LEMBAGA EKKLESIA PRIVATE ENGLISH COURSE . J-ABDI: Jurnal Pengabdian kepada Masyarakat, [S. l.], v. 1, n. 1, p. 85–90, 2021. DOI: 10.53625/jabdi.v1i1.182. Disponível em: https://mail.bajangjournal.com/index.php/J-ABDI/article/view/182. Acesso em: 6 jul. 2025.