RUKMANANDA, R.; PUTRA, S.; KARAMI, M. Kualitas Bahan Bitumen Akibat Penambahan Kadar Lignin Yang Berbeda. Jurnal Rekayasa Sipil dan Desain (JRSDD), [S. l.], v. 6, n. 4, p. Hal. 433 – 444, 2018. DOI: 10.23960/jrsdd.v6i4.1010. Disponível em: http://journal.eng.unila.ac.id/index.php/jrsdd/article/view/1010. Acesso em: 10 dec. 2025.