MELO, Luiza Baptista; CRUZ, Célia; SÁ, Isabel. New Instruments for Impact Assessment: study of an academic library. Qualitative and Quantitative Methods in Libraries, [S.l.], v. 5, n. 1, p. 251-262, july 2017. ISSN 2241-1925. Available at: <http://qqml-journal.net/index.php/qqml/article/view/322>. Date accessed: 20 feb. 2020.