Ilhaq W, Harnanik H. PROBLEM BASED LEARNING DALAM MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR MATERI PASAR SASARAN. EEAJ [Internet]. 18Mar.2017 [cited 18Jul.2024];5(3):800. Available from: https://journal.unnes.ac.id/sju/eeaj/article/view/13581