This book is outdated and full of misinformation.
The method within the book is the "natural dog training movement" built off the debunked dominance pack theory. This book would have you solve problems by flooding your dog in situations they cannot cope with, saying "no" and collar popping them over and over until you give up. Then call the dog that has given up and avoids the owner as "respectful". Lots of outright dangerous advice such as seeking dominance over your dog, physical force, holding muzzles shut and lots of less dangerous but still ridiculously useless rules that are just there to keep the dog avoidant of the owner - forbidding them to sniff on walks, not allowing to go through door first, not allowed to walk ahead of the owner, not allowed in the bed.