About This Guide
Bibliographic Formats and Standards is a guide to machine-readable cataloging
records in WorldCat. It provides tagging conventions, input standards and
guidelines for entering information into WorldCat.
Biblographic Formats and Standards assumes you are familiar with Anglo-
American Cataloguing Rules, second edition, 2004 Revision, and other standard
cataloging reference material. Some sections also assume you have a general
knowledge of data processing and databases.
This edition supersedes the cataloging information in these technical bulletins:
Abbreviated-Level Record Guidelines
OCLC-MARC Format Update 2008
OCLC-MARC Format Update 2007 and Institution Records to
Accommodate the RLG Union Catalog
ISBN and OCLC Number Changes
OCLC-MARC Format Update 2006
OCLC-MARC Format Update 2003
OCLC-MARC Format Update 2002
The examples provided are illustrative, not prescriptive. Do not take the examples or
the form in which they are presented as instructions. Because of the dynamic nature
of WorldCat, some examples may not appear online now as shown in the document.
Additional examples When you find a record that illustrates a cataloging rule or coding practice
particularly well, please share it with us. Please send an e-mail message giving the
OCLC record number and comments to email@example.com.
Bibliographic Formats and Standards
OCLC has established input standards based on the Library of Congress National
Level Full & Minimal Requirements (http://www.loc.gov/marc/bibliographic/nlr/).
Previously, OCLC revised some of the NLR standards on the advice of OCLC
advisory groups. At the field level:
z Level I represents full or complete cataloging.
z Level K represents minimal-level cataloging.
Standards for indicators and subfields are in effect only when the field itself is
Input Standards table A