Nurfianto DM, Saidah K, Primasatya N. Case study: Problematics of implementing differentiation learning in Kediri city. JPDN [Internet]. 2024 Apr. 26 [cited 2024 Dec. 22];9(2):345-56. Available from: https://ojs.unpkediri.ac.id/index.php/pgsd/article/view/22368