Mardawiyah Daryanto, Wiwiek, and Dety Nurfadilah. “Financial Performance Analysis Before and After the Decline in Oil Production: Case Study in Indonesian Oil and Gas Industry”. International Journal of Engineering & Technology 7, no. 3.21 (August 8, 2018): 10–15. Accessed May 5, 2024. https://sciencepubco.com/index.php/ijet/article/view/17085.