Risdiyanto R. Pengelompokan berdasarkan kemampuan (ability grouping) dan dampaknya bagi peserta didik. Inov. Curr [Internet]. 2021 Feb. 19 [cited 2026 Aug. 3];18(1):73-81. Available from: https://ejournal-hipkin.or.id/index.php/jik/article/view/398