Al-Ammar, E. A., N. H. Malik, and M. Usman. “Application of Using Hybrid Renewable Energy in Saudi Arabia”. Engineering, Technology & Applied Science Research 1, no. 4 (August 16, 2011): 84–89. Accessed November 25, 2024. https://etasr.com/index.php/ETASR/article/view/33.