Revision History

Revision in progress

The OCLC WorldCat Quality Management Division continually revises Bibliographic Formats and Standards (BFAS). When a page within BFAS has been changed, a revision date appears at the end of the page, for example, "This page last revised: July 3, 2016."

In conjunction with the implementation of Resource Description and Access (RDA) in 2013, OCLC began a comprehensive multi-year project to thoroughly review, revise, reorganize, and update BFAS. You will see frequent changes throughout the text, which may result in some temporary inconsistencies. This ongoing revision of BFAS includes such changes as:

  • Updating policies
  • Adding references to RDA and the LC-PCC PSs 
  • Adding and revising both RDA and non-RDA examples 
  • Adding links to Searching WorldCat Indexes 
  • Deleting references to card printing, which was discontinued in 2015
  • Creating new General Information pages for Access Points and Control Subfields (completed)

The About RDA page on the OCLC Web site brings together links to ALA, LC, PCC, OCLC, and other documentation about RDA. This includes the current OCLC RDA Policy Statement and a recorded Webinar that takes an in-depth look at that policy statement. In the Cataloging Documentation section of BFAS, we have also linked to many cataloging community best practice documents and other useful tools.

Please send any questions or concerns to

Revision chronology

Date Scope
2016 New Access Points and Control Subfields sections added. Continue the thorough update of BFAS.
2015 Information from Technical Bulletin 265: OCLC-MARC Format Update 2015 incorporated. Began deletion of references to card printing. Continued the thorough update of BFAS.
2014 Information from Technical Bulletin 263: OCLC-MARC Format Update 2014, Phase 1 and Technical Bulletin 264: OCLC-MARC Format Update 2014, Phase 2 incorporated. Continued the thorough update of BFAS.
2013 Information from Technical Bulletin 262: OCLC-MARC Format Update 2013 incorporated. Began the thorough update of BFAS, including the addition of RDA examples.

Information from Technical Bulletin 261: OCLC-MARC Format Update 2012 incorporated.


Information from Technical Bulletin 260: OCLC-MARC Format Update 2011 incorporated. In addition to changes from the technical bulletin, this revision also included miscellaneous changes throughout.

2010 Information from Technical Bulletin 258: OCLC-MARC Format Update 2010 including RDA Changes incorporated. BFAS Chapter 5: Quality Assurance revised to reflect that the changes of the Expert Community Experiment have been made permanent.

Information from Technical Bulletin 257: OCLC-MARC Format Update 2009 incorporated.

2008 Bibliographic Formats and Standards, 4th edition. For more information, see Major Differences Between Third and Fourth Editions.


©2016 OCLC, Inc.

OCLC users are hereby granted permission to reproduce this document for their internal use. Reproduction of substantial portions of this document must contain the OCLC copyright notice. Unless otherwise noted, all product and service names are registered trademarks or trademarks of OCLC.

This page last revised: May 2, 2016