Yes I should have put the reference that I have made. I am honest about my mistake, If my account will be unbanned I will make it to a point that I will put references to the articles that I am referring to and backtrack all the post that I have made with the subject from other articles to reference them instead of just deleting all the post that I have made.
I'm sorry to say that no amount of appeal will get your account back to you. I suggest that you since learn from your mistakes then just create a fresh account and just be mindful of not plagiarising again.
I can't recall any accounts being re-instated except for one (maybe I'm wrong). The member was running a lending services here that's why his account was restore. But cases like yours is not worth so forget about it, just saying.