Tumpal Richardo Sirait 2024. Pengaruh Katekisasi Sidi terhadap Perubahan Perilaku Remaja Kristen di HKBP Kobun Kopi. Bulletin of Community Engagement. 4, 2 (Aug. 2024), 265–270. DOI:https://doi.org/10.51278/bce.v4i2.1401.