The paper links to Causality, by Pearl, but it links to the first edition from 2000. He came out with a second edition in 2009.
http://www.amazon.com/Causality-Reasoning-Inference-Judea-Pearl/dp/052189560X/ref=ntt_at_ep_dpt_1
And the third edition is forthcoming. For those who have the second edition, here is a list of all changes in the 3rd.
Michael Nielsen has posted a long essay explaining his understanding of the Pearlean causal DAG model. I don't understand more than half, but that's much more than I got out of a few other papers. Strongly recommended for anyone interested in the topic.