Subyakto, Agung, Fiqrotul Wasiyah, and Linaniyyatul Masruroh. 2025. “Utilization of HVS Paper Waste for The Manufacture of Oxalic Acid”. IPTEK The Journal of Engineering 7 (2):66-70. https://journal.its.ac.id/index.php/joe/article/view/8086.