McGee, R. S. A literature survey of operational and emerging on-line library circulation systems. ERIC.
Chicago-referens (17:e uppl.)McGee, Robert S. A Literature Survey of Operational and Emerging On-line Library Circulation Systems. Washington, D.C.: ERIC.
MLA-referens (8:e uppl.)McGee, Robert S. A Literature Survey of Operational and Emerging On-line Library Circulation Systems. ERIC.
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