Diyah Candra Anita, R. Wulandari, and H. S. Nugroho. “Upgrading Charcoal Briquettes of Coconut Shell for Export”. Jurnal Pemberdayaan Masyarakat Madani (JPMM), Vol. 4, no. 1, June 2020, pp. 22-23, doi:10.21009/JPMM.004.1.02.