Hidayati, Nurkhairo, Tengku Idris, and Peny Husna Handayani. “Student Problem Solving Skills in PBL Model: Viewed from the Discourse Sheet”. Biosfer: Jurnal Pendidikan Biologi 15, no. 2 (October 27, 2022): 231–241. Accessed November 22, 2024. https://journal.unj.ac.id/unj/index.php/biosfer/article/view/23840.