These are books I own and recommend:

Deadly Force: Understanding Your Right to Self Defense by Massad Ayoob

Note that joining Armed Citizens Legal Defense Network gets you a copy of Deadly Force as part of your membership.

The Law of Self Defense by Andrew Branca

In Defense of Self and Others… Issues, Facts, and Fallacies: The Realities of Law Enforcement’s Use of Deadly Force by Urey Patrick and John Hall

Fair disclaimer: the links will take you to Amazon and I am an Affiliate. However, I don’t recommend anything I don’t think is worthwhile.