Albinus, Mentler and Da Vinci all have good things to say. Michaelangelo, Raphael and a ton of other old dead guys were masters of the human form.
Masters abound. Copying them occasionally isn't a bad idea. There's some new fangled DVDs and books that are okay, but other than Mentler, the best books were done by people like Loomis and Bridgman, and you'll see their names mentioned a lot around the forum.
That's not an anatomy book. It's a book about rythm and dynamics within figure drawing.
Try books that focus on the construction of anatomy rather then simply giving muscle charts. Bridgman and Bammes are good in this area. I also really like the anatomy workshops by Ron Lemen in ImagineFX.