AHMED ABDULLAH, M.; HAMED ALI, A. The geopolitical weight of the major producers in the world oil map. College of Basic Education Research Journal, [S. l.], v. 17, n. 3, p. 710–736, 2021. DOI: 10.33899/berj.2021.169623. Disponível em: https://edusj.uomosul.edu.iq/index.php/berj/article/view/39480. Acesso em: 26 oct. 2025.