Sutiyoko, Sutiyoko, and Fatwa Madani. “Perubahan Karakteristik Cetakan Green Sand Dan Cacat Inklusi Pasir Akibat Perubahan Kadar Bentonit”. Jurnal Engine: Energi, Manufaktur, dan Material 6, no. 2 (November 30, 2022): 50–56. Accessed November 5, 2024. https://ejournal.up45.ac.id/index.php/Jurnal_ENGINE/article/view/1276.