Rukbi DA, Hidayat N, Suharyati H. STRATEGIES TO STRENGTHEN VISIONARY LEADERSHIP, LEARNING COMMUNITIES, AND COLLECTIVE EFFICACY TO INCREASE THE EFFECTIVENESS OF DIFFERENTIATED LEARNING. j. pendidik. n.a sekol. dasar. [Internet]. 2025 Jan. 14 [cited 2025 Dec. 5];8(3). Available from: https://journal.um-surabaya.ac.id/pgsd/article/view/24132