Determination of Road user Charges in South East Nigeria: An Empirical Survey. Global Journal of Management and Business Research, [S. l.], v. 18, n. F2, p. 1–7, 2018. Disponível em: https://testing.journalofbusiness.org/index.php/GJMBR/article/view/2638. Acesso em: 5 feb. 2026.