Hajij, Moamar Abdelleh Mohamed, Matna Mayouf Mahmoud, and Khaled Arhil Chiheb. “The Effect of Economic Knowledge in Global Concert of Arab Gulf Countries in 2017”. Finance and Business Economies Review 3, no. 2 (June 1, 2019): 436–451. Accessed September 1, 2024. https://jiamcs.centre-univ-mila.dz/index.php/fber/article/view/480.