Source: https://www.amazon.com/Essentials-Parental-Alienation-Syndrome-Hurts/dp/1466435194/ref=as_li_ss_tl?s=books&ie=UTF8&qid=1437167505&sr=1-1&keywords=parental+alienation+robert+evans&linkCode=sl1&tag=acenterforhum-20&linkId=e37b2470e8dc463558c8b5539d022a1d