I'm about halfway through the book
Adult Children Of Emotionally Immature Parents.
It's pretty good and helped me identify some of the traits my parents had. I always felt like my dad was very emotionally stunted and child-like in some ways, but now I realize that my mom also had some of that but in different ways.
I think one mistake this book makes, and some other similar self help books I've read, is that they go a little too far when trying to profile a type of person. There's a lot of "this type of person always does this and this, that type of person always does that and that." Emotionally immature people have a wide range of behaviors and there's an infinite number of different combinations of symptoms.
I think it would be better if the author simply talked about each specific trait and an example of how that trait manifests itself, rather than try to put together complete profiles of people that are very rarely going to actually describe any one person.
I'd still recommend this book for anyone who hasn't had much emotional connection, or an inapropriately close connection, to their parents and wants to learn more about why that is and how to heal yourself.