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MARC 21 Format for Authority Data: Including Guidelines for Content Designation
Network Development and MARC Standards Office, Library of Congress
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Format for records to communicate standard forms for names of persons and organizations, series titles, uniform titles, and subject terms that are used in bibliographic records. The format also includes fields for cross-references, for linking to headings in other thesauri, and for indicative treatment for series. Important for catalog consistency; essential for participants in cooperative authority file programs such as NACO.
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Introduction to MARC Documentation

Machine-Readable Cataloging (MARC) is the standard in library automation. Available in Cataloger's Desktop (

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