MENÉNDEZ ECHAVARRÍA, A. L.; TINOCO ALFARO, J. A. Proposal to Implement a Virtual Reference Service at Pontificia Universidad Javeriana’s General Library. Signo y Pensamiento, [S. l.], v. 28, n. 54, p. 318–329, 2009. Disponível em: https://revistas.javeriana.edu.co/index.php/signoypensamiento/article/view/4540. Acesso em: 17 jul. 2024.