SITINJAK, S.; IDRIS, M. Experimental Study of Density and Iodine Number of Biodiesel in Production from Waste Cooking Oil. IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA), [S. l.], v. 3, n. 1, p. 66–71, 2024. DOI: 10.56862/irajtma.v3i1.100. Disponível em: https://www.e-journals.irapublishing.com/index.php/IRAJTMA/article/view/100. Acesso em: 4 aug. 2025.