ECHEM, M. E.; OKWU, E. Library Security and Sustainable Service Delivery in Donald Ekong Library, University of Port Harcourt, Rivers State, Nigeria. Communicate: Journal of Library and Information Science, [S. l.], v. 25, n. 1, p. 89–101, 2023. Disponível em: https://www.cjolis.org/index.php/cjolis/article/view/26. Acesso em: 3 may. 2025.