Unethical Marketing Practices by Petroleum Black Marketers in Akwa Ibom State, Nigeria. Journal of Global Economics & Sustainable Development, [S. l.], v. 1, n. 1, p. 39–46, 2025. Disponível em: https://e-pallipublishers.com/index.php/jgesd/article/view/5194. Acesso em: 28 jul. 2026.