JPFA, Editor. “Front Cover JPFA Vol 7 No 2 December 2017”. Jurnal Penelitian Fisika dan Aplikasinya (JPFA) 7, no. 2 (December 30, 2017): i. Accessed May 8, 2024. https://journal.unesa.ac.id/index.php/jpfa/article/view/2048.