Hartutik. “Strengthening P3 Knowledge With PBL Method in Teacher Professional Education (PPG) at Elementary School Level”. PROCEEDINGS International Conference on Catholic Religious Education and Philosophy 1, no. 2 (June 30, 2024): 44–53. Accessed December 21, 2024. https://iccrep.stpdianmandala.ac.id/index.php/ICCREP/article/view/4.