Normally you can find everything in the nhs elibrary but i've tried and cant find it there! They can request books for you so if you are nhs employed or know someone who is perhaps you could request it through your local nhs library? hey there,

if you go to any library you will find it in the heath section or else in the mental health section, or if you just type it into your search engine that will give you a good idea of where to go