ARL: A Bimonthly Report on Research Library Issues & Actions. Association of Research Libraries.
Chicago-referens (17:e uppl.)ARL: A Bimonthly Report on Research Library Issues & Actions. Association of Research Libraries.
MLA-referens (9:e uppl.)ARL: A Bimonthly Report on Research Library Issues & Actions. Association of Research Libraries.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.