on 15 September 2010
This book is good for stealing references from but you can get through your EYP without it. If you can borrow this from the library or a friend it's better than buying it. You only really need this if you're on the long pathway, it's not needed at all for the validation process. If, however, your EYP is stressing you out buy it although the other books in the range may be more helpful. Good luck with your EYP, if I can do it, which I have, you certainly can!