The Business and Economics of Linux and Open Source
Prentice Hall PTR, 20 September, 2002.

Open Source Web Development with LAMP: Using Linux, Apache, MySQL, Perl, and PHP
Addison Wesley Professional, 17 December, 2002.

Understanding Open Source Software Development
Addison Wesley Professional, 31 December, 2001.

The Cathedral and the Bazaar: Musings on Linux and Open Source by an Accidental Revolutionary
O'Reilly & Associates, 15 January, 2001.

Open Sources: Voices from the Open Source Revolution (O'Reilly Open Source)
O'Reilly & Associates, January, 1999.

Open Source: The Unauthorized White Papers
John Wiley & Sons, 15 January, 2000.

Government Policy Toward Open Source Software
The Brookings Institution, January, 2003.

Open Source Development with CVS: Learn How to Work With Open Source Software
The Coriolis Group, 25 October, 1999.

Linux System Administration Black Book: The Definitive Guide to Deploying and Configuring the Leading Open Source Operating System
Paraglyph Publishing, 01 July, 2002.