Simanjuntak YM, Pardede L, Pasaribu KMD, Silalahi J. Pengaruh Model Pembelajaran Problem Based Learning Dalam Meningkatkan Kepedulian Sosial Siswa Kelas VIII Di SMP Swasta Alwashliyah 20 Medan. Innovative [Internet]. 2023 Jun. 2 [cited 2026 Jul. 19];3(2):6747-58. Available from: https://j-innovative.org/index.php/Innovative/article/view/1098