DANIEL, J. O. Virtual Library for Nigerian Libraries. Nigerian Libraries, [S. l.], v. 36, n. 2, p. 55–62, 2004. DOI: 10.4314/jnla.v36i2.26568. Disponível em: https://www.ajol.info/index.php/jnla/article/view/26568. Acesso em: 6 aug. 2026.