Apolonia Hendrice Ramda, Melania Delima, and Fransiskus Nendi. “THE IMPACT OF PBL WITH PEER TUTORS ON THE PROBLEM SOLVING ABILITY OF MIDDLE SCHOOL STUDENTS”. Jurnal Pendidikan dan Kebudayaan Missio 14, no. 2 (August 3, 2022): 190-203. Accessed May 24, 2024. https://jurnal.unikastpaulus.ac.id/index.php/jpkm/article/view/1283.