Nasir, I.M. et al. 2020. Leadership Strategies of Elementary School Principals in Developing Teacher Professionalism. Jurnal Manajemen Pendidikan : Jurnal Ilmiah Administrasi, Manajemen dan Kepemimpinan Pendidikan. 2, 1 (May 2020), 1–21. DOI:https://doi.org/10.21831/jump.v2i1.30675.