Harianto M, Anshori I. The Principal’s Strategy in Improving the Quality of Teacher Competence at Senior High School. acopen [Internet]. 2022Jun.30 [cited 2024Apr.23];60:10.21070/acopen.6.2022.2287. Available from: https://acopen.umsida.ac.id/index.php/acopen/article/view/2287