Zadry, Hilma Raimona. “Cover & Preface JOSI Vol. 19(1) 2020”. Jurnal Optimasi Sistem Industri 19, no. 1 (June 6, 2020): 1–81. Accessed April 27, 2024. https://josi.ft.unand.ac.id/index.php/josi/article/view/495.