Simbolon R, Koeswanti HD. Comparison of Pbl (Project Based Learning) Models with Pbl (Problem Based Learning) Models to Determine Student Learning Outcomes and Motivation. International j.of Elementary Education [Internet]. 2021 Mar. 1 [cited 2024 Apr. 20];4(4):519-2. Available from: https://ejournal.undiksha.ac.id/index.php/IJEE/article/view/30087