Siswanti, Siswanti. “Pengaruh Penambahan Aditif Proses Daur Ulang Minyak Pelumas Bekas Terhadap Sifat-Sifat Fisis”. Eksergi 10, no. 2 (November 7, 2014): 27–31. Accessed July 13, 2025. https://jurnal.upnyk.ac.id/index.php/eksergi/article/view/336.