I don't thank ANY book is the "bible" of guitar building. However, all the different books and different builders' approaches are valuable. Alex Willis' book is okay, from my point of view. They all have something to contribute.
Everyone's tastes differ. My own book, written when I had built ten guitars, had two goals: 1) to serve as an introduction to people who, like me, had not ever even seen a guitar kit or a guitar built from a kit, and knew little about them except from the advertisers whose hype cannot always be trusted, 2) to offer a survey of the major guitar kits available, why and how they are different, etc. The book will be updated and revised later this year.
Although I freely admit I was new and am not (and am not, until I've built at least 50 guitars) an accomplished guitar builder, that very fact made the Complete Guide to Building Kit Acoustic Guitars
a valuable source of information. It differed from the books by the seasoned pro's in that my techniques and methods were not "personalized," and were more accessible by more new builders. I had not forgoten the things that stumped me in the beginning -- and still haven't, thanks to this forum and its input.
My new book, being published today, is titled "Building Martin-style Acoustic Guitar Kits,"
and draws on a bit more knowledge than the first one did. It's a complete build of a Martin kit from unpacking to setup (except for detailed finishing), and I believe will serve a definite purpose: Replacement of the 16-page booklet that Martin includes with their kits. It will be announced here in the forum later today.