ABDULLAHI, Mustapha Sheikh; OZDEN, Kemal. Challenges of Nigeria’s federalism in comparison with the United States of America. Journal of Global Economics and Business, [S. l.], v. 2, n. 6, p. 123–131, 2021. Disponível em: http://journalsglobal.com/index.php/jgeb/article/view/62. Acesso em: 4 apr. 2025.