“Pengaruh Model Problem Based Learning (PBL) Terhadap Kemampuan Analisis Siswa Pada Materi Larutan Penyangga”. ALOTROP 7, no. 2 (December 15, 2023): 141–148. Accessed July 3, 2025. https://ejournal.unib.ac.id/alotropjurnal/article/view/31153.