DocBook: The Definitive Guide is copyright © 2004-2006 Norman Walsh. Portions copyright © 1999-2003 O'Reilly & Associates, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, as spelled out in the book's legal notice. Versions available: Version 2.0.17 is a work in progress. It purports to document OASIS Standard DocBook V4.5 with the additional EBNF, HTML Forms, MathML, and SVG modules. As it is being updated periodically; it may be inconsistent in some areas. An unexpanded edition of version 2.0.17 is also available. In this version, content models are shown with parameter entities rather than fully expanded. Version 1.0.3 is an online version of the first edition of the book. It documents DocBook V3.1. A ZIP archive of HTML pages (unexpanded). This is the same as the online version. Note that the root page is docbook.html (docbook-x.html), not index.html. The XML sources are available from the DocBook Open Repository on SourceForge. Jiří Kosek built a Microsoft HTML Help version of V2.0.17 and V2.0.17 unexpanded. Fairly crude PDF renderings of V2.0.6: Part I, Part II, and Part III are also available. A Palm database suitable for use with the iSilo document reader. Please do not download copies of the website with some recursive web slurping tool.

The list of errata in the first edition is available.

Some other versions of The Definitive Guide are available.

A French edition is available from O'Reilly & Associates.