JPPPF, Editor. “Front Matter JPPPF Volume 6 Issue 1, June 2020”. Jurnal Penelitian & Pengembangan Pendidikan Fisika 6, no. 1 (June 30, 2020). Accessed April 20, 2025. http://103.8.12.212:33180/unj/index.php/jpppf/article/view/15921.