PEMANFAATAN ARANG LIMBAH KULIT CEMPEDAK DAN EKSTRAK BUAH KARAMUNTING SEBAGAI BAHAN DASAR PEMBUATAN TINTA SPIDOL RAMAH LINGKUNGAN. PROCEEDINGS OF NATIONAL COLLOQUIUM RESEARCH AND COMMUNITY SERVICE, [S. l.], v. 3, p. 24–26, 2019. DOI: 10.33019/snppm.v3i0.1305. Disponível em: https://journal.ubb.ac.id/index.php/snppm/article/view/1305. Acesso em: 26 jul. 2026.