SALAHU, M. L. Slave Factor in the Development of Bida Emirate: 1857-1900. African Research Review, [S. l.], v. 11, n. 3, p. 13–22, 2017. DOI: 10.4314/afrrev.v11i3.2. Disponível em: https://www.ajol.info/index.php/afrrev/article/view/161091. Acesso em: 20 sep. 2026.