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.