Spektra, Editor. “BACK MATTER SPEKTRA VOLUME 3 NOMOR 1 APRIL 2018”. Spektra: Jurnal Fisika dan Aplikasinya 3, no. 1 (April 30, 2018). Accessed May 7, 2024. https://journal.unj.ac.id/unj/index.php/spektra/article/view/7762.