Pandiangan, Saut Maruli Tua, Josua Alexander Gultom, Dian Ariani, Donny Dharmawan, and Ribka Sari Butar-Butar. 2023. “Effect of Problem-Based Learning Model on Learning Outcomes in Microeconomic Course”. Edumaspul: Jurnal Pendidikan 7 (2). https://doi.org/10.33487/edumaspul.v7i2.7283.