Mirna, Mirna, Iqbal Iqbal, and Kasman Kasman. “Analisis Sifat-Sifat Fisik Keramik Berbahan Tambahan Abu Ampas Tebu Dan Abu Sekam Padi”. Gravitasi 16, no. 2 (December 22, 2017). Accessed August 26, 2025. https://bestjournal.untad.ac.id/index.php/GravitasiFisika/article/view/9476.