Helmawati, H. (2025) “The Role of Principal’s Instructional Leadership in Improving Teacher Performance: A Case Study at SMPN 3 Baleendah”, Jurnal Visionary : Penelitian dan Pengembangan dibidang Administrasi Pendidikan, 13(1), pp. 40–46. doi: 10.33394/vis.v13i1.13757.