My former therapist only ever mentioned one book by Hyman Spotnitz that is sort of his Bible for his therapeutic orientation. I read it and was not impressed at all (similarly not impressed with his therapeutic style).

Current T and I talk about books often, mostly psychology and philosophy, sometimes some fiction. Too many came up to list but I tend to pay attention to the books he mentions because he and I have similar tastes and interests in many ways. Sometimes I forget them, other times take a note while in session and check them out later. We have both read a couple books the other mentioned and discussed them a bit in sessions. I now try to consciously limit the book discussions though because I think it could easily dominate the sessions and it's not what I pay him for.

In general though, I've learned much more about human nature from books, science and art than from therapy.