“Pelatihan Pembuatan Biobriket Ramah Lingkungan Berbahan Dasar Campuran Limbah Bonggol Jagung/Ampas Kopi/Serbuk Gergaji Kayu Kelompok Masyarakat Petani (GAPOKTAN) KM 12 Balikpapan Utara : Training on Making Biobriquettes Using Corncob/Coffee Ground/Wood Sawdust-based Agriculture Waste for the Farmers Community Group (GAPOKTAN) KM 12 North Balikpapan”, B.JPMI, vol. 4, no. 1, pp. 1–9, Dec. 2021, doi: 10.11594/bjpmi.04.01.01.