Frankly, not a huge fan of Job Michael Evens. I read their Monks of New skete book, and it's full of stuff like alpha dog rolls and other physical punishment. That stuff was very big in the eighties, but we know better now. Especially wouldn't do that with a dog already defensive biting. Carol Benjamin has some good stuff, but honestly, I haven't read her books lately so I don't remember that well. See if they have "When Pigs Fly" by Jane Killian. Not a behavior problems book, but a super good clicker training book, and excellent explanations how to motivate dogs and train without even having to touch them, let alone use any force or discomfort. Off to work, I'll check in later.