WAROKKA, A.; SIRUN, A. Manufacture of Coconut Shell Charcoal Briquettes Results of Pyrolysis Process. JURNAL TEKNOLOGI INFRASTRUKTUR BERKELANJUTAN (JTIB), Manado, Indonesia, v. 1, n. 1, p. 52-61, 2018. Disponível em: http://p3m.polimdo.ac.id/jurnal/index.php/JTIB/article/view/Warokka. Acesso em: 19 sep. 2021.