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Darsana IGB, Wiarta IW, Putra M. Pengaruh Model Problem Based Learning Berbasis Portofolio Terhadap Kompetensi Pengetahuan Matematika. j. penelit. dan pengemb. pendidik. [Internet]. 2019 Jul. 5 [cited 2024 Dec. 9];3(3):200-7. Available from: https://ejournal.undiksha.ac.id/index.php/JJL/article/view/18608