PARDOMUAN SIMANULLANG; ASTRIANI SIPAYUNG; GULTOM, I.; HERAWATI NAINGGOLAN; HENDRA WANRI LUMBANGAOL. Optimizing the “Kawan Belajar” Learning Community to Enhance Teacher Collaboration at SMP Negeri 4 Pahae Julu. Jurnal Multidisiplin Sahombu, [S. l.], v. 6, n. 03, p. 904–908, 2026. Disponível em: https://ejournal.seaninstitute.or.id/index.php/JMS/article/view/8419. Acesso em: 9 may. 2026.