Hi Gavin

I don't know of specific books, I'm afraid. I'd go to Exclusive Books and browse through the fitness books. There really is little difference between them, the only thing I'd say is beware of promises! They all make unrealistic claims to sell books and that's the warning sign. The exercises themselves are probably similar and not really going to make the difference - how one uses them is, and obviously, the safety aspect of technique and who might need to avoid certain exercises.

Good luck