Association of Research Libraries. University Library Management Studies Office. (1978). Planning for the future of the card catalog. ARL.
Chicago-viite (17. p.)Association of Research Libraries. University Library Management Studies Office. Planning for the Future of the Card Catalog. Washington, D.C.: ARL, 1978.
MLA-viite (8. p.)Association of Research Libraries. University Library Management Studies Office. Planning for the Future of the Card Catalog. ARL, 1978.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.