HASSANALI, Muhammed. Ralph A. Austen, Trans-Saharan Africa in World History. World History Connected, [S. l.], v. 8, n. 3, 2011. DOI: 10.13021/whc.v8i3.4686. Disponível em: https://journals.gmu.edu/whc/article/view/4686. Acesso em: 9 jul. 2025.