1. Understanding ADHD - Dr Christopher Green. Dr Christopher Green is author of the widely acclaimed book `Toddler Taming. This is his latest book and is an excellent guide to ADD in children.
2. ADHD – Recognition, Reality and Resolution - Dr Geoffrey Kewley‘ The most informative guide to ADHD, for teachers parents and healthcare professionals, with case studies and lots of practical advice.’
3. Taking Charge of ADHD - Russell A Barkley The complete authoritative guide for parents 
4. 1-2-3 Magic - Thomas W Phelan. Effective Discipiline for Children
5. Different Kids - Sue Dengate
6. You Mean I’m Not Lazy, Stupid, Crazy? - Kate Oelly/Peggy Ramundo

There is also a useful book list on the ADDIS website :

http://www.addiss.co.uk/parents.htm