Muhammad Qorib and Rahmat Rifai Lubis 2023. The Defensive Fortress for Strengthening Religious Harmony: The Existence and Strategy of Pioneers in Religious Moderation to Educate Muslims in Sumatera Utara. Kurdish Studies. 11, 3 (Dec. 2023), 162–177. DOI:https://doi.org/10.67145/ks.v11i3.1175.