Darmayanti N, Wiarta I, Agustika G. Pengaruh Model Pembelajaran STAD berbasis Portofolio terhadap Kompetensi Pengetahuan Matematika. International j.of Elementary Education [Internet]. 2018 Nov. 1 [cited 2024 Jul. 17];2(3):228-36. Available from: https://ejournal.undiksha.ac.id/index.php/IJEE/article/view/15962