I'll agree with the other reviewers that there is no sourcing. I didn't want sourcing, I wanted ideas which I could use to communicate to architects. This book is packed with a huge volume of amazing ideas beautifully presented. Look elsewhere if you want a guide to furniture sources. Look here if you want beautiful designs which you can use as stimulation or a basis for your own sourcing.
If you love this book, you will love "Ultimate Kitchen Design" and "Ultimate Bathroom Design" by the same author. If you hate this book, the other books also have hundreds of beautiful pictures and little sourcing.
BTW: you can find the designers of the rooms in this book if you are willing to go to a little trouble. Their names are written in tiny letters in the lower right hand corners of the photos. A little work with google will turn up most of them. The same is true of the other two books.