[Angelgal]

I'm not too sure about Cesar because well I've never seen his methods used but I know many people who think highly of him.

I use Brad Pattison (google him and you can find his website)
I have had amazing results with his methods with my Westie. Now before anyone gets on me ... I did start him out with other methods, using treats and lots of rewards but the problem is he was too focused on the reward and not me. It was sooner or later going to cost him his life (we had 3 near misses). So I turned to Brad for help and it's been wonderful. Their not as harsh as people believe, Brad himself is a bit ... out there, but its what gets people motivated. There is reward in his methods, just not food or toy related. There are a few others from my hometown who use Brad's methods and to see the changes in the dogs is just amazing.

I have nothing against any method except physically punishing the dog.
Not every method is for every dog, which is why if you're being consistant and doing the homework but there are no changes - it may be time to consider something different. You need to find what's right for YOUR dog, not what other people think are right. Brad's methods may not have been my first choice for training but my guy responds well to it, so we use it.

Have you had a behaviour specialist in? That might be an opinion to get.
I have to say, just because a dog growls and barks doesn't mean its always dominance. It sounds to me it could be a number of things, from territorial aggression to anxiety and needing to constantly know her spot in the pack. It's hard to tell though when you can't see the dog and the behaviours in person to see their expressions and postures. Videos would definatly be good to give any real advice.