Effendi, Kharisya Ayu. “Oil Prices and Macroeconomic on the Islamic Banking Performance in OPEC Member Countries”. International Journal of Energy Economics and Policy 9, no. 1 (December 7, 2018): 200–204. Accessed February 23, 2026. https://www.econjournals.com/index.php/ijeep/article/view/7098.