Passive-Aggressive Helping Hand 
Discusses behavior, traits, provides links, and includes a message board.
http://passiveaggressive.homestead.com/Dual Diagnosis and the Passive-Aggressive Personality Disorder
Describes this disorder, the treatment for it, including co-occurring substance abuse.
http://www.toad.net/~arcturus/dd/papd.htm
The Passive-Aggressive Male
Article that appeared in Esquire magagzine for professionals to identify behavior traits and patterns.
http://www.couplesinstitute.com/professional/artman/publish/article_17.shtml
Eliminating Passive Aggressiveness
Provides tools for coping, management of this disorder, and how to confront someone who exhibits these tendencies.
http://www.coping.org/anger/passive.htm
The Boomerang Relationship
Discusses passivity, irresponsibility, and resulting partner anger.
http://www.angriesout.com/couples8.htm
Passive Aggressive Support
Yahoo email list group for partners or those with this disorder.
http://health.groups.yahoo.com/group/passiveaggressivesupport/
Passive-Aggressive Behavior
Describes the disorder, questions to ask, and self-help.
http://www.med.nyu.edu/patientcare/library/article.html?ChunkIID=96685
