Yudono, Bambang, - Fatma, Sri Pertiwi Estuningsih, and Lilis Suganda. “Oil Recovery of Soil Contained Petroleum Oil by Using Bio Surfactant of Mixed Cultures Bacteria (Brevundumonas Diminuta, Pseudomonas Fluorescens, Pseudomonas Aeroginosa, Pseudomonas Citronelis) at Vary PH Conditions (5-9)”. International Journal on Advanced Science, Engineering and Information Technology 7, no. 3 (June 16, 2017): 858–864. Accessed July 22, 2024. https://ijaseit.insightsociety.org/index.php/ijaseit/article/view/2154.