Purba, Y. S. (2020). Advance-Organizer and Team-Teaching: Suatu Strategi Mendukung Peran Guru Pendidikan Agama Kristen di Era Revolusi Industri 4.0. Regula Fidei : Jurnal Pendidikan Agama Kristen, 5(1), 58–68. https://doi.org/10.33541/rfidei.v5i1.49