“PENGARUH MODEL PEMBELAJARAN GROUP INVESTIGATION TERHADAP KEMAMPUAN BERPIKIR ANALITIS DAN PERILAKU ASERTIF SISWA SMP NEGERI 35 SURABAYA”, Sindoro, vol. 18, no. 9, Aug. 2026, Accessed: Oct. 21, 2026. [Online]. Available: https://journal.cib.institute/index.php/sindoro/article/view/3649