Aw shucks, thanks for the comments, guys!
I thought I ought to mention that the older versions, while still valid, do not have all the recent changes in the question bank that have taken place. However, they are still a good overview. The absolute latest version will be posted in the next week or so, after some changes caused by the above mentioned questions.
Also, the colour one is only available from my web site above - if it went through the retail chain it would be prohibitively expensive and this is the only way I can keep the cost down.
In answer to the question, the ISBN is 0-9681928-2-3 and it is available through all bookstores via Gardners books.
I only have 2 of the older versions left - the one after the one that BALPA liked.
Phil