Here are some good books and DVDs about PAS for kids and teens:

This is a program for kids and parents who are victims of alienation:

http://www.warshak.com/publications/resources-purchase.html

Welcome Back Pluto DVD:

http://www.warshak.com/alienation/pluto-dvd-2.

Books for kids:

http://www.warshak.com/resources/bookshelf/for-children.html