Spektra, Editor. “BACK MATTER SPEKTRA VOLUME 6 ISSUE 3, DECEMBER 2021”. Spektra: Jurnal Fisika dan Aplikasinya 6, no. 3 (December 30, 2021). Accessed November 5, 2024. https://journal.unj.ac.id/unj/index.php/spektra/article/view/25470.