Hanifah S, Nengah Parta I, Puspitasari L. Application of Problem-based Learning Model to Improve Students’ Problem-solving Skills of Class VII-E SMP Negeri 25 Malang. KSS [Internet]. 2023Jun.6 [cited 2024Jul.18];8(10):300–309. Available from: https://knepublishing.com/index.php/KnE-Social/article/view/13455