Riswan, Khaidir, Martha Fani Cahyandito, Aldrin Herwany, and Mokhamad Anwar. “The Investors’ Perspective on Investment Attractiveness of Oil and Gas Exploration Industry in Indonesia”. International Journal of Engineering and Technology 7, no. 4.15 (October 7, 2018): 409–412. Accessed April 9, 2025. https://sciencepubco.com/index.php/IJET/article/view/23592.