Why should that particular book be the bible? I haven't read it, but I've flicked through it and seeing things like the suggestion that clients should "construct" URLs made me doubt its worth.
Shouldn't Fielding's original thesis be the bible?
Ok, maybe bible was used to loosely. In my experience, I found it a well written, well balanced, useful primer for real-world development of RESTful web services that also has enough depth to make it a reference I've returned to since. That's better.