HAJI, A. H.; HAMAD , A. U. Effect of Revenue Collection Strategies on Service Delivery in Zanzibar Urban Municipality. International Journal of Public Administration and Management Research , [S. l.], v. 9, n. 3, p. 49-57, 2023. Disponível em: https://www.journals.rcmss.com/index.php/ijpamr/article/view/933. Acesso em: 8 jun. 2025.