Dr. Tom Shinder's Configuring ISA Server 2004 by Deb and Tom Shinder http://www.amazon.com/exec/obidos/ASIN/1931836191/isaserver/
Microsoft ISA Server 2004 - Das Handbuch—German Language ISA Server book by Marc Grote, Christian Gröbner, and Dieter Rauscher http://www.msisafaq.de/Buch/
ISA Server 2004 Standard Edition Protégez votre système d'information—French Language ISA Server book by Philippe Mathon and Frédéric Esnouf http://www.amazon.fr/exec/obidos/ASIN/2746029812/esnoufnet-21