Rahayu, Lucky, Vita Yuliana, M. Buang Budiono, Afrian Riznaldhy, and Riris Kurniarina. “Green Coal Machine: Innovative Solution for Processing Organic Soil Enhancer from Compost and Coal Testing Waste”. Journal of Applied Electrical Engineering 7, no. 2 (December 22, 2023): 91-96. Accessed May 9, 2024. https://jurnal.polibatam.ac.id/index.php/JAEE/article/view/6775.