JPPPF, Editor. “Front Matter JPPPF Volume 4 Issue 2, December 2018”. Jurnal Penelitian & Pengembangan Pendidikan Fisika 4, no. 2 (December 31, 2018). Accessed May 3, 2025. http://103.8.12.212:33180/unj/index.php/jpppf/article/view/9851.