Damelina Basauli Tambunan, Denpharanto Agung Krisprimandoyo, & Wendra Hartono. (2024). Peningkatan Kompetensi Guru Sekolah Minggu di Lingkungan Gereja HKBP Resort Surabaya Selatan. Jurnal Leverage, Engagement, Empowerment of Community (LeECOM), 6(1). https://doi.org/10.37715/leecom.v6i1.4427