Putri Annisaa Silalahi, and Muhammad Faisal Husna. “The Influence of the Problem Based Learning Model on the Learning Outcomes of Class XI Students at SMA Al-Washliyah 3 Medan”. International Journal of Educational Research Excellence (IJERE) 2, no. 2 (November 3, 2023): 430–436. Accessed July 3, 2024. https://ejournal.ipinternasional.com/index.php/ijere/article/view/637.