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. JMS [Internet]. 2026 May 4 [cited 2026 May 9];6(03):904-8. Available from: https://ejournal.seaninstitute.or.id/index.php/JMS/article/view/8419