I love how someone can think that driving someone somewhere or providing a roof over their head is "parenting". These are things that an organization for homeless people do, or any organization that helps those in need.
Doesn't make you a good parent!
Sorry I don't have any reference material to point you to. I think understanding the affect of an alcoholic parent on a child (and a family in general) is as complicated, if not more than understanding alcoholism in general.
My Father (an alcoholic) never defended his drinking, then again he never had to (to my recollection) because my Mother didn't participate in that. She never, to my knowledge, called him on his drinking. She married an alcoholic (or at least I imagine he was at the time), she knew this and accepted it.
Doesn't mean she accepted poor behaviour, in general and doesn't mean it didn't have a devastating affect on her at the time but her expectation of him was, basically, to bring home money from work and he always did.