Montalvo Montalvo, Marilyn. “THE WORK OF PUERTORRIQUEÃ‘AS UNIVERSITY LIBRARIES ON A QUANTITATIVE AND QUALITATIVE DATA BASE”. Acceso. Puertorrican Journal of Library and Information Science, vol. 9, Oct. 2007, pp. 57-79, https://revistas.upr.edu/index.php/acceso/article/view/16718.