3 links
Skeptic´s Dictionary: The Urantia Book
skepdic.com
History of the Brotherhood and discussion of the fallacies of the belief system.
The Urantia Book
logosresourcepages.org
A Christian contention that The Urantia Book rejects every significant doctrine of Christianity and Judaism.
The Urantia Book: A Dangerous New Age Doctrine
endtimeprophecy.org
A critical argument against the book, from a biblical perspective.