CAHYADI, Ah. THE EFFECT OF TEACHER CERTIFICATION ON TEACHERS??? PERFORMANCE AT SMAN 21 KABUPATEN TANGERANG. JIPIS, [S. l.], v. 26, n. 2, p. 33–37, 2018. Disponível em: https://ejournal.unis.ac.id/index.php/JIPIS/article/view/92. Acesso em: 21 apr. 2026.