Mukhlisin M. Profesionalisme Guru dan Prestasi Belajar Siswa: Analisis Efektifitas Program Sertifikasi Guru. KJSK [Internet]. 2021 May 25 [cited 2026 May 26];1(1):11-25. Available from: https://lptnunganjuk.com/ojs/index.php/kartika/article/view/24