Roemer, Robin Chin ; Borchardt, Rachel: Meaningful METRICS : A 21st-Century Librarian’s Guide to Bibliometrics, Altmetrics, and Research Impact. - Chicago, Illinois : Association of College and Research Libraries (ACRL), A division of the American Library Association, 2015. - 241 Seiten : Diagramme. ISBN 978-0-8389-8755-1 (pbk. : alk. paper) -- ISBN 978-0-8389-8757-5 (epub) -- ISBN 978-0-8389-8756-8 (pdf ) -- ISBN 978-0-8389-8758-2 (kindle) - http://www.ala.org/acrl/sites/ala.org.acrl/files/content/publications/booksanddigitalresources/digital/9780838987568_metrics_OA.pdf