Walsh, Norman and Leonard Muellner, DocBook: The Definitive Guide, O'Reilly & Associates, Inc., Sebastopol, CA, October 1999.

In August, 2001, O'Reilly released DocBook: TDG under the GNU Free Documentation License. Working drafts of a future second edition are available, and the sources are now in the DocBook Open Repository at SourceForge.

Walsh, Norman, Making TeX Work, O'Reilly & Associates, Inc., Sebastopol, CA, April 1994. (Out of Print)