Gultom, Josua Alexander, Windo Sinurat, Manaor Silitonga, Eliya Fatma Harahap, and Abdurohim Abdurohim. 2024. “Effect of Problem-Based Learning Model on Learning Motivation in Quality Control Course”. Edumaspul: Jurnal Pendidikan 8 (1), 1817-24. https://doi.org/10.33487/edumaspul.v8i1.7904.