Amaral, Virna. “ANALYSIS THE IMPLEMENTATION OF QUALITY AND ENVIRONMENTAL MANAGEMENT IN PETROCHEMICAL INDUSTRIES”. ENVIROSAN : Jurnal Teknik Lingkungan 2, no. 1 (August 8, 2019): 1–8. Accessed May 13, 2026. https://journal.angga.us/index.php/envirosan/article/view/226.