KHAN, Azhar Rashid. Low-Tax to GDP Ratio: Causes and Recommendations. Journal of Public Policy Practitioners, [S. l.], v. 2, n. 1, p. 38–61, 2023. DOI: 10.32350/jppp.21.02. Disponível em: https://journals.umt.edu.pk/index.php/jppp/article/view/4460. Acesso em: 21 jul. 2026.