MEKONNEN, T. H. The challenges of tax administration and collection of revenue in Afar Region, Ethiopia. International journal of health sciences, [S. l.], v. 6, n. S2, p. 10001–10010, 2022. DOI: 10.53730/ijhs.v6nS2.7218. Disponível em: https://sciencescholar.us/journal/index.php/ijhs/article/view/7218. Acesso em: 31 jan. 2026.