Rahmawati, Annisa, Hesti Kurniahu, Sriwulan Sriwulan, and Riska Andriani. “Komparasi Kandungan Timbal (Pb) Kertas Bekas Mengandung Tinta Pasca Aplikasi Cairan Rumen Sapi Berdasarkan Lama Inkubasi”. Bioscientist : Jurnal Ilmiah Biologi 9, no. 2 (December 30, 2021): 477–482. Accessed August 15, 2025. https://e-journal3.undikma.ac.id/index.php/bioscientist/article/view/3770.