Solihah R, Minarti IB, R RC, Mukaromah S. Analysis of Product Differentiation Through Problem Based Learning on the Level of Creativity of Class X Students of SMAN 2 Semarang. mangiferaedu [Internet]. 2023Aug.3 [cited 2024Oct.18];8(1):17-4. Available from: https://jurnal.biounwir.ac.id/index.php/mangiferaedu/article/view/168