USANI, N. E.; SAMPSON, E. A.; INWANG, A. R. 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://journals.e-palli.com/home/index.php/jgesd/article/view/5194. Acesso em: 10 nov. 2025.