Alam, Iskandar Ali, Hairani Hairani, and Faurani Santi Singagerda. “Price Determination Model of World Vegetable and Petroleum”. International Journal of Energy Economics and Policy 9, no. 5 (July 23, 2019): 157–177. Accessed December 23, 2024. https://mail.econjournals.com/index.php/ijeep/article/view/7916.