Achmad Nurhidayat. “KAJIAN VARIASI MATRIK KOMPOSIT SERBUK SEKAM PADI LIMBAH TERHADAP SIFAT MEKANIK”. JURNAL TEKNOSAINS KODEPENA 1, no. 1 (August 16, 2020): 29–36. Accessed October 10, 2025. http://www.jtk.kodepena.org/index.php/jtk/article/view/5.