“The Principal’s Strategy in Improving the Quality of Teacher Competence at Senior High School: Strategi Kepala Sekolah Dalam Meningkatkan Kualitas Kompetensi Guru Di SMA”. 2022. Academia Open 6 (June): 10.21070/acopen.6.2022.2287. https://doi.org/10.21070/acopen.6.2022.2287.