Gultom, Josua Alexander, Windo Sinurat, Manaor Silitonga, Eliya Fatma Harahap, and Abdurohim Abdurohim. “Effect of Problem-Based Learning Model on Learning Motivation in Quality Control Course”. Edumaspul: Jurnal Pendidikan 8, no. 1 (March 1, 2024): 1817-1824. Accessed December 9, 2025. https://jurnal.unimen.cloud/maspuljr/article/view/7904.