How can I find Michael Crichton's publisher, agent or lawyer?

I am filing a case of Copyright Infringement as his, "State of Fear" novel is based on my 2000 copyrighted screenplay, "Unnatural Disaster". Is there an easy way to find the publisher, agent, lawyer that represents him?
Update: ***I know who the publisher is, I need the Publishing agent, there is a difference! The publishing company won't tell me.
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