Joice Mahe Dece Vicce Wokas, I. Trang, Merinda H. Ch. Pandowo, and Genita Gracia Lumintang, “Christian Leadership Spirituality: Realizing Effective and Sustainable Church Management in the Evangelical Christian Church in Minahasa (GMIM)”, IJEBIR, vol. 5, no. 04, pp. 1056-1072, Jun. 2026.