If you specifically want a book, then the only one I'm aware of that actually teaches the technique is Arthur Buckley's Principles & Deceptions. I think, however, that learning the muscle pass from a book is quite difficult, so you might want to supplement that with a DVD. If you do, I'd recommend Shoot Ogawa's Master of the Muscle Pass. It's got some lovely routines, as well as in-depth teaching on the move itself.