Wahyuni Y, Dewi R, Marsia Y. Peningkatan Aktivitas Belajar Ekonomi Melalui Model Pembelajaran Problem Based Learning di Kelas X2 SMAN 17 Surabaya. baej [Internet]. 31Aug.2023 [cited 18May2024];4(2):172 -178. Available from: https://journal.unnes.ac.id/sju/baej/article/view/69045