Maulana, Afriando Ryan, and Tutik Muji Setyoningrum. “Production of Biodiesel from Coconut Waste by In-Situ Transesterification Method and Catalyst Calcium Oxide”. Eksergi 16, no. 1 (July 23, 2019): 13–17. Accessed July 15, 2025. https://jurnal.upnyk.ac.id/index.php/eksergi/article/view/2526.