Nurhidayati, Ely, et al. “Utilization of Coconut Shell Waste into Charcoal Briquettes in Sungai Kupah Village, Kubu Raya Regency”. Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang, vol. 7, no. 2, May 2022, pp. 197-06, doi:10.26905/abdimas.v7i2.6783.