Anyone able to suggest a book

[notonlybutalso]

to help unpick issues for an adult man who witnessed domestic violence against his mother when he was a child? He isn't violent, indeed he has gone to the other extreme of being unable to express any anger in the context of a relationship. I can't find any literature that addresses this but can't believe that that's because there isn't any. Any suggestions?

Sorry, I don't know of a book. But I have worked with a man with this history. The result for him was that he was irrationally and extremely over-protective of women and fearful of men.
In many cases, the main problem is the guilt that the child holds on to for not preventing the violence, or not acting differently. I imagine that each individual will find their own unique maladaptive way of dealing with this experience. Perhaps in this case, he has developed a belief that expressing anger is dangerous and can only result in a loss of control. The outcome is entirely individual, which is why I would suggest individual therapy.