JPPPF, Editor. Front Matter JPPPF Volume 4 Issue 2, December 2018. Jurnal Penelitian & Pengembangan Pendidikan Fisika, [S. l.], v. 4, n. 2, 2018. DOI: 10.21009/1.04200. Disponível em: https://journal.unj.ac.id/unj/index.php/jpppf/article/view/9851. Acesso em: 25 nov. 2024.