SUHARTANTA, -; ARIFIN, Zaenal. PUTILIZATION OF PETROCK OIL AS ALTERNATIVE FUEL MACHINES DIESEL. Jurnal Penelitian Saintek, [S. l.], v. 13, n. 1, 2010. DOI: 10.21831/jps.v13i1.181. Disponível em: https://journal.uny.ac.id/index.php/saintek/article/view/181. Acesso em: 9 may. 2025.