Tambunan, Damelina Basauli, David Sukardi Kodrat, and Wendra Hartono. 2023. “Peningkatan Profesionalisme Bagi Pelayan Di Lingkungan Gereja HKBP Indonesia Bagian Timur ”. Jurnal Leverage, Engagement, Empowerment of Community (LeECOM) 5 (2):129–138. https://doi.org/10.37715/leecom.v5i2.3856.